32 results on '"Pholyotha, Arthit"'
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2. A new discovery of the bioluminescent terrestrial snail genus Phuphania (Gastropoda: Dyakiidae)
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Pholyotha, Arthit, Yano, Daichi, Mizuno, Gaku, Sutcharit, Chirasak, Tongkerd, Piyoros, Oba, Yuichi, and Panha, Somsak
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- 2023
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3. Contributions of a small collection of terrestrial microsnails (Pupilloidea, Hypselostomatidae) from Myanmar with description of three new species
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Tongkerd, Piyoros, primary, Lwin, Ngwe, additional, Páll-Gergely, Barna, additional, Chanabun, Ratmanee, additional, Pholyotha, Arthit, additional, Prasankok, Pongpun, additional, Seesamut, Teerapong, additional, Siriwut, Warut, additional, Srisonchai, Ruttapon, additional, Sutcharit, Chirasak, additional, and Panha, Somsak, additional
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- 2024
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4. Uncovering local endemism from southeastern Myanmar: description of the new karst-associated terrestrial snail genus Burmochlamys (Eupulmonata, Helicarionidae)
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, Lin, Aung, additional, and Panha, Somsak, additional
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- 2022
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5. Rediscovering the dancing semislug genus Cryptosemelus Collinge, 1902 (Eupulmonata, Ariophantidae) from Thailand with description of two new species
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, and Panha, Somsak, additional
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- 2021
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6. Aenigmatoconcha mitis, comb. nov
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, and Panha, Somsak
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Stylommatophora ,Helicarionidae ,Mollusca ,Gastropoda ,Aenigmatoconcha mitis ,Animalia ,Biodiversity ,Aenigmatoconcha ,Taxonomy - Abstract
Aenigmatoconcha mitis (Pfeiffer, 1863) comb. nov. Figs 1, 2B, 4C–F, 6, 10B Helix mitis Pfeiffer, 1863 [1862]: 268. Type locality: Lao Mountains, Camboja [Lao Mountains, Cambodia]. Helix mitis – Pfeiffer 1868: 141. — Tryon 1886: 171. Ariophanta (Kaliella) mitis – Fischer 1891: 21. Hyalinia mitis – Fischer & Dautzenberg 1904: 396. Macrochlamys (?) mitis – Inkhavilay et al. 2019: 78, 79, fig. 37b. Material examined Syntypes CAMBODIA • 2 sh; “Lao Mountains, Camboja ” [Lao Mountains, Cambodia]; NHMUK ex. Cuming collection. Other material THAILAND • 37 sh, 16 sp; Nakhon Sawan Province, Mueang District, Limestone outcrops at Wat Tham Bo Ya; 15º43′47.3″ N, 99º56′44.7″ E; CUMZ 7708 • 30 sh, 15 sp; same collection data as for preceding; CUMZ 7885 • 8 sh, 21 sp; Nakhon Sawan Province, Krok Phra District, Limestone outcrops at Wat Khao Tham Phra; 15°33′30.2″ N, 99°57′28.1″ E; CUMZ 7849 • 3 sp; Kanchanaburi Province, Sai Yok District, Limestone outcrops at Wat Thep Thepa Satthatham; 14°03′56.6″ N, 99°11′45.7″ E; CUMZ 7913 • 21 sh, 24 sp; Kanchanaburi Province, Mueang District, Limestone outcrops at Wat Tham Charoentham; 13°55′59.1″ N, 99°27′59.9″ E; CUMZ 7687 • 3 sp; Kanchanaburi Province, Tha Muang District, Limestone outcrops at Wat Tham Faet; 13°57′52.5″ N, 99°34′56.1″ E; CUMZ 7914 • 30 sh, 1 sp; Kanchanaburi Province, Dan Makham Tia District, Limestone outcrops at Wat Tham Khao Cha Ang; 13°48′08.4″ N, 99°26′33.2″ E; CUMZ 7247 • 4 sh, 3 sp; Phetchaburi Province, Khao Yoi District, Limestone outcrops at Wat Khiri Wong; 13°20′03.2″ N, 99°45′19.0″ E; CUMZ 7917 • 1 sh, 15 sp; Phetchaburi Province, Khao Yoi District, Limestone outcrops at Wat Puang Malai; 13°18′46.0″ N, 99°47′02.2″ E; CUMZ 7921 • 9 sh; same collection data as for preceding; CUMZ 7938 • 5 sh, 14 sp; Phetchaburi Province, Tha Yang District, Limestone outcrops at Wat Khao Krachiu; 12°57′41.3″ N, 99°54′49.3″ E; CUMZ 7918 • 3 sh, 16 sp; Phetchaburi Province, Cha-am District, Limestone outcrops at Khao Nang Panthurat; 12°50′20.5″ N, 99°57′11.6″ E; CUMZ 7920 • 2 sh, 2 sp; Phetchaburi Province, Cha-am District, Limestone outcrops at Tham Chaeng Bureau of Monks; 12°49′44.3″ N, 99°56′27.1″ E; CUMZ 7919 • 4 sh, 7 sp; Prachuap Khiri Khan Province, Mueang District, Limestone outcrops at Khao Lom Muak; 11°47′03.0″ N, 99°48′56.3″ E; CUMZ 7915 • 3 sh, 8 sp; Prachuap Khiri Khan Province, Mueang District, Limestone outcrops at Khao Ta Mong Lai; 11 o 50′07.3″ N, 99 o 49′50.1″ E; CUMZ 7916. Description SHELL (Fig. 4C–F). Shell depressed to globosely depressed, medium-sized (width 12.3–18.1 mm, height 6.9–9.9 mm), rather thin, and translucent. Shell surface smooth and glossy. Shell colour whitish to very pale horny-white. Whorls: 5–5½, regularly increasing in size; varix present; suture rather wide and shallow. Spire rather elevated. Last whorl broad and well-rounded. Aperture obliquely oval-lunate in shape; peristome simple. Columellar margin simple, slightly expanded near umbilicus. Umbilicus open and deep. EXTERNAL FEATURES (Fig. 2B). Living snails with reticulated skin and pale yellowish to dark grey body. Five well-developed mantle lobes; left and right shell lobes thin, pale yellowish, spread with small whitish dots, and left shell lobe larger than right shell lobe. Three dorsal lobes broad and crescentshaped; right dorsal lobe larger than anterior and posterior left dorsal lobes. Caudal fossa present; caudal horn raised, rather large, and whitish to pale fleshy-grey in colour. GENITALIA (Fig. 6). Atrium (at) enlarged and very short. Penis (p) long, cylindrical, and with slightly thick penial sheath (ps) encircling about half of penis length. Inner sculpture of penis with very small and oblique wrinkled penial pilasters (pp), and one large longitudinal fold running the length of the entire penis chamber. Epiphallus (e1 + e2) approximately as long as penis: e1 slender and narrower than penis, and e2 shorter and bulbous shape. Inner sculpture of e1 with very small thin longitudinal folds to nearly smooth surface with one thickened longitudinal fold, and inner sculpture of e2 with large papillae arranged in oblique rows. Epiphallic caecum (ec) very short; penial retractor muscle (prm) thin and attached at tip. Flagellum (fl) small and rather short. Vas deferens (vd) very long and thin. Vagina (v) very short and enlarged. Gametolytic duct (gd) long, slender, and enlarged near vagina; gametolytic sac (gs) very large and oblong shape. Free oviduct (fo) cylindrical, long, and encircled with thick tissue near vagina. RADULA (Fig. 10B). Teeth arranged in anteriorly V-shaped rows with half row consisting of about 76– 79 teeth at middle plate. Central teeth symmetrical monocuspid, and spatulate-shaped with curved cusp. Lateral and marginal teeth undifferentiated, asymmetrical monocuspid, spatulate-shaped with curved cusp, and outermost teeth gradually reduced in size. Distribution The distribution of Aenigmatoconcha mitis is wider than all other recognised species. This species can be found in limestone areas ranging from central (Nakhon Sawan Province) to southern (Prachuap Khiri Khan Province) Thailand (Fig. 1). Remarks This species was originally described by L. Pfeiffer (1863) based on specimens in the collection of H. Cuming obtained from Henry Mouhot. The collection locality was brief: “Lao Mountains, Camboja ”. However, Mouhot’s recorded localities were generally imprecise and referred to a wide geographical area, for example “ Siam ”, “Lao Mountains, Camboja ” and “ Camboja ”. This has made it difficult to infer more precise type localities of several land snail species described from Mouhot’s specimens. No additional specimen records or literature references are available for this species until now. The most recent works on land snails from Laos and southern Cambodia confirmed the existence of A. mitis (Inkhavilay et al. 2019; Sutcharit et al. 2020c). Based on the recorded itinerary, H. Mouhot had travelled to “Pechaburi” [Petchaburi Province] in 1861, and clearly stated that he had visited caves and several hills during his four-month stay (Mouhot 1864: 57; Ashburton 1864: map). We have surveyed several limestone hills in western and peninsular Thailand and encountered numbers of empty shells and living specimens that well-matched with the type specimens of “ Helix mitis Pfeiffer, 1863 ” (Fig. 4C). Therefore, peninsular Thailand (Petchaburi Province; Fig. 1) might be the area where H. Mouhot collected this species. Aenigmatoconcha mitis exhibits a rather wide range of shell shape variation from depressed (Fig. 4F) to somewhat globose (Fig. 4C, D). However, the genitalia of these shell morphs are identical and the COI phylogeny also supports that all shell morphs are grouped together within the A. mitis clade (Fig. 2)., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros & Panha, Somsak, 2021, Systematic revision of the limestone karst-restricted land snail genus Aenigmatoconcha (Eupulmonata: Helicarionidae), with description of a new species, pp. 55-82 in European Journal of Taxonomy 767 on pages 66-70, DOI: 10.5852/ejt.2021.767.1487, http://zenodo.org/record/5528134, {"references":["Pfeiffer L. 1863. Descriptions of thirty-six new land shells from the collection of H. Cuming, Esq. Proceedings of the Zoological Society of London 30: 268 - 278. [Published in parts, dates follow Duncan (1937)].","Pfeiffer L. 1868. Monographia heliceorum viventium supplementum tertium: sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum, volume quintum. F. A. Brockhaus, Lipsiae.","Tryon Jr. G. W. 1886. Manual of Conchology; Structural and Systematic. With illustrations of the species. Second Series: Pulmonata. Volume II. Zonitidae. Academy of Natural Sciences, Philadelphia.","Fischer P. 1891. Catalogue et distribution geographique des Mollusques terrestres, fluviatiles & marins dune partie de lIndo-Chine (Siam, Laos, Cambodge, Cochinchine, Annam, Tonkin). Imprimerie Dejussieu Pere et Fils, Autun. https: // doi. org / 10.5962 / bhl. title. 14809","Fischer H. & Dautzenberg P. 1904. Catalogue des Mollusques terrestres et fluviatiles de lIndo-Chine orientale cites jusqu' a ce jour. Mission Pavie, Etudes diverses 3: 390 - 450. https: // gallica. bnf. fr / ark: / 12148 / bpt 6 k 8814596 [accessed 22 July 2021]","Inkhavilay K., Sutcharit C., Bantaowong U., Chanabun R., Siriwut W., Srisonchai R., Pholyotha A., Jirapatrasilp P. & Panha S. 2019. Annotated checklist of the terrestrial molluscs from Laos (Mollusca, Gastropoda). ZooKeys 834: 1 - 166. http: // doi. org / 10.3897 / zookeys. 834.28800","Tumpeesuwan C. & Tumpeesuwan S. 2017. Discovery of an overlooked helicarionid land snail (Helicarionidae: Durgellinae) from northeastern Thailand, with description of a new genus and new species, and a note on radula morphology and genital system. Raffles Bulletin of Zoology 65: 174 - 181. Tumpeesuwan C. & Tumpeesuwan S. 2018. Aenigmatoconcha sumonthai, a new helicarionid land snail from Chumphon Province, Southern Thailand (Helicarionidae: Durgellinae). Raffles Bulletin of Zoology 66: 170 - 176. http: // doi. org / 10.5281 / zenodo. 4504598","Sutcharit C., Thach P., Chhuoy S., Ngor P. B., Jeratthitikul E., Siriwut W., Srisonchai R., Ng T. H., Pholyotha A., Jirapatrasilp P. & Panha S. 2020 c. Annotated checklist of the land snail fauna from southern Cambodia (Mollusca, Gastropoda). ZooKeys 948: 1 - 46. https: // doi. org / 10.3897 / zookeys. 948.51671","Mouhot H. 1864. Travels in the Central Parts of Indo-China (Siam), Cambodia, and Laos, During the Years 1858, 1859, and 1860. Murray, London.","Ashburton J. 1864. Paper read at the Royal Geographical Society 10 th March, 1862. In: Mouhot H. (ed.) Travels in the Central Parts of Indo-China (Siam), Cambodia, and Laos, During the Years 1858, 1859, and 1860: 296 - 300. Murray, London."]}
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- 2021
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7. Aenigmatoconcha Tumpeesuwan & Tumpeesuwan 2017
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, and Panha, Somsak
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Stylommatophora ,Helicarionidae ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Aenigmatoconcha ,Taxonomy - Abstract
Genus Aenigmatoconcha Tumpeesuwan & Tumpeesuwan, 2017 Aenigmatoconcha Tumpeesuwan & Tumpeesuwan, 2017: 182–184. Aenigmatoconcha – Tumpeesuwan & Tumpeesuwan 2018: 171. Type species Aenigmatoconcha clivicola Tumpeesuwan & Tumpeesuwan, 2017, by original designation. Description Shell dextral with 5–5½ convex whorls, strongly depressed to globosely depressed, medium-sized, thin to slightly solid, translucent, and pale milky to whitish-horny in colour. Shell surface smooth, glossy, and varix usually present. Body whorl well-rounded to slightly-shouldered. Suture shallow. Aperture slightly to very crescentic in shape with simple lip. Umbilicus open and deep. Animal with reticulated skinand whitish, yellowish, pale fleshy grey to dark brown body with tiny whitish dots irregularly scattered over entire body. Mantle lobes well-developed (two shell lobes and three dorsal lobes; see Figs 3, 5A). Shell lobes can cover most, if not all of the shell and are retracted when disturbed. Left and right shell lobes very thin, translucent, ovate to triangular in shape; right shell lobe (rsl) smaller than left shell lobe (lsl). Dorsal lobes enlarged, crescent-shaped, covering body, and smaller than shell lobes. Anterior left dorsal lobe (ant-ldl) and posterior left dorsal lobe (post-ldl) smaller than right dorsal lobe (rdl). Sole tripartite, lateral foot margin, caudal fossa, and caudal horn present. Genitalia with moderately long to very long penis, thick penial sheath, short to long epiphallus, small flagellum, and short vagina. Gametolytic organ with short gametolytic duct and bulbous gametolytic sac. Oviduct with large lobules; prostate gland running alongside oviduct. Radular teeth arranged in anteriorly V-shaped or wide-angle U-shaped rows; central tooth symmetrical monocuspid and spatulate or oblong in shape; lateral and marginal teeth undifferentiated, asymmetrical monocuspid and spatulate or oblong in shape, and outermost teeth gradually reduced in size. Distribution Species of Aenigmatoconcha exhibit allopatric distributions and are restricted to limestone karsts in Thailand (Fig. 1)., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros & Panha, Somsak, 2021, Systematic revision of the limestone karst-restricted land snail genus Aenigmatoconcha (Eupulmonata: Helicarionidae), with description of a new species, pp. 55-82 in European Journal of Taxonomy 767 on pages 62-64, DOI: 10.5852/ejt.2021.767.1487, http://zenodo.org/record/5528134, {"references":["Tumpeesuwan C. & Tumpeesuwan S. 2017. Discovery of an overlooked helicarionid land snail (Helicarionidae: Durgellinae) from northeastern Thailand, with description of a new genus and new species, and a note on radula morphology and genital system. Raffles Bulletin of Zoology 65: 174 - 181. Tumpeesuwan C. & Tumpeesuwan S. 2018. Aenigmatoconcha sumonthai, a new helicarionid land snail from Chumphon Province, Southern Thailand (Helicarionidae: Durgellinae). Raffles Bulletin of Zoology 66: 170 - 176. http: // doi. org / 10.5281 / zenodo. 4504598"]}
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- 2021
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8. Aenigmatoconcha eunetis Pholyotha & Panha, sp. nov
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, and Panha, Somsak
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Stylommatophora ,Helicarionidae ,Aenigmatoconcha eunetis ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Aenigmatoconcha ,Taxonomy - Abstract
Aenigmatoconcha eunetis Pholyotha & Panha sp. nov. urn:lsid:zoobank.org:act: 98AD360F-93A3-4A8E-BE1A-5C991DBC358F Figs 1, 2F–H, 7E–F, 9, 10D Diagnosis Shell medium-sized and pale yellowish white. Aperture ovate-lunate in shape and vertically open. Genitalia with very long and slender penis with many tiny conical penial pilasters inside. Radular teeth arranged in wide-angle U-shaped row, teeth with oblong shape, monocuspid. Etymology The specific name ʻ eunetis ʼ is from the Greek word meaning ʻspousesʼ, honouring the authors of genus Aenigmatoconcha, who are married. Material examined Holotype THAILAND • 1 sh (width 13.9 mm, height 7.4 mm); Uthai Thani Province, Lan Sak District, Limestone outcrops at Tham Namthip Bureau of Monks; 15°26′00.3″ N, 99°35′18.7″ E; CUMZ 7931. Paratypes THAILAND • 1 sh, 7 sp; same collection data as for holotype; CUMZ 7933 • 12 sp; same collection data as for holotype; CUMZ 7932 • 2 sh; same collection data as for holotype; NHMUK. Other material THAILAND • 1 sp; Uthai Thani Province, Lan Sak District, Limestone outcrops at Hup Pa Tat; 15°22′36.5″ N, 99°37′49.5″ E; CUMZ 7934 • 6 sp; same collection data as for preceding; CUMZ 7935 • 3 sh, 27 sp; Uthai Thani Province, Nong Chang District, Limestone outcrops at Wat Khao Bang Kraek; 15°18′07.9″ N, 99°41′04.5″ E; CUMZ 7936. Description SHELL (Fig. 7E–F). Depressed to globosely depressed, medium-sized (width 12.6–14.2 mm, height 6.1– 7.1 mm), thin and translucent. Shell surface smooth, and polished, and pale yellowish white. Whorls: 5–5½, regularly increasing in size, separated by shallow suture. Spire rather elevated; varix usually present; last whorl well-rounded. Aperture very obliquely oval-lunate in shape; peristome simple. Columellar margin simple and slightly expanded near umbilicus. Umbilicus open and deep. EXTERNAL FEATURES (Fig. 2F–H). Living snails with reticulated skin and pale yellowish to slightly dark grey body. Five well-developed mantle lobes: left and right shell lobes translucent, same colour as body, covered by tiny whitish dots, right shell lobe smaller than left shell lobe. Dorsal lobes broad and crescent-shaped: right dorsal lobe larger than both anterior and posterior left dorsal lobes. Caudal fossa present; caudal horn raised and rather large, and same colour as body. GENITALIA (Fig. 9). Atrium (at) enlarged and very short. Penis (p) very long and slender with rather thick penial sheath (ps) covering from atrium to almost middle of penis. Inner sculpture of penis with small conical penial pilasters (pp), and three prominent longitudinal folds along entire length of penis chamber. Epiphallus (e1 + e2) approximately half of penis length: e1 elongate and slender, and e2 very short and bulbous. Inner sculpture of e1 nearly smooth with small, thin, and longitudinal folds, and e2 densely papillate. Epiphallic caecum (ec) straight, short, and approximately as long as e2; penial retractor muscle (prm) thin and attached at tip. Flagellum (fl) small, rather short, and approximately as long as e2. Vas deferens (vd) very long, thin, and convoluted. Vagina (v) short, enlarged, thickened and cylindrical. Gametolytic sac (gs) short and bulbous; gametolytic duct (gd) long, enlarged near vagina then becoming smaller and very slender. Free oviduct (fo) long, cylindrical, and encircled with dense tissue near vagina. RADULA (Fig. 10D). Teeth arranged in wide-angle U-shape with half row consisting of about 97–98 teeth at middle plate. Central tooth symmetrical monocuspid, elongated oblong-shaped with curved cusp, and slightly smaller than lateral tooth. Lateral and marginal teeth undifferentiated, asymmetrical monocuspid and elongated oblong-shaped with curved cusp; outermost teeth gradually becoming smaller. Distribution Aenigmatoconcha eunetis sp. nov. occurs in a few isolated limestone hills in Uthai Thani Province.This new species lives on limestone karsts, where snails tend to hide themselves in rock crevices and shelter during the daytime. Remarks Aenigmatoconcha eunetis sp. nov. clearly differs from all congeners in having 1) the longest penis, 2) penial internal sculpture consisting of longitudinal folds and small conical penial pilasters, and 3) inner sculpture of epiphallus (e2) densely papillae. For comparison, A. clivicola has oblique trapezoidshaped penial pilasters, A. mitis has oblique wrinkled penial pilasters with a longitudinal fold, and A. sumonthai has very small conical penial pilasters without longitudinal fold. In addition, for the inner sculpture of epiphallus (e2), A. clivicola has irregularly oblique trapezoid and small conical papillae. Aenigmatoconcha mitis and A. sumonthai have loose papillae arranged in oblique rows, but the former has relatively fewer rows and papillae are significantly larger in size than the latter. Moreover, radular teeth of only A. eunetis sp. nov. are arranged in wide-angle U-shaped row and oblong-shaped teeth, while radular teeth of other Aenigmatoconcha species are arranged in V-shaped rows and spatulate in shape. Discussion Each of the four Aenigmatoconcha species forms a well-defined clade in the COI phylogeny. Aenigmatoconcha can be divided into two groups based on the genital characters (Figs 1–2; Table 2). Group I (Fig. 2) has a long epiphallic caecum and short penial caecum, and contains one species, A. clivicola, which is restricted to northeasthern Thailand (Fig. 1). Group II (Fig. 2) has a short epiphallic caecum and no penial caecum; this group contains A. mitis, A. sumonthai, and A. eunetis sp. nov. This group occurs from central to southern Thailand along the Tenasserim Range (Fig. 1). The COI tree showed very low nodal support for the relationships among the two Aenigmatoconcha groups and the other two helicarionid genera. Although the phylogenetic relationships among Aenigmatoconcha, Sophina and Chalepotaxis remain unresolved, the genital characters of both groups of Aenigmatoconcha were clearly distinct from Sophina and Chalepotaxis. In the phylogenetic tree of the 28S gene, moreover, these three genera were confirmed as different genera, but the systematic position of two Aenigmatoconcha species (A. clivicola and A. sumonthai) is unresolved (Sutcharit et al. 2020a). Further research should include on more genes and more taxa of the Southeast Asian helicarionoids to better understand the phylogenetic relationships and morphological evolution of these groups. Aenigmatoconcha can be distinguished from almost all other Southeast Asian helicarionoid genera by their unique milky to pale whitish-horny and umbilicate shell. Other helicarionoids with a whitish shell include Macrochlamys psyche Vermeulen et al., 2019, Sarika lactoconcha Pholyotha & Panha, 2020, and Sarika consepta (Benson, 1860). However, the relatively medium to large-sized shells (shell width larger than 15 mm), narrowly perforate umbilicus, genital structure, and radula with triangular teeth of these three species clearly differentiate them from all Aenigmatoconcha species (Vermeulen et al. 2019; Pholyotha et al. 2020 a, 2020b). The greatest similarity in shell characters occurred in Sophina and Chalepotaxis, but their genitalia are obviously different. The distinctive characters between Aenigmatoconcha and Chalepotaxis have been reported (Tumpeesuwan & Tumpeesuwan 2017; Sutcharit et al. 2020a). However, Tumpeesuwan and Tumpeesuwan (2017) did not report the presence of a “penial sheath” and a “flagellum” in A. clivicola (the type species). In fact, they stated that the absence of a penial sheath in Aenigmatoconcha is a diagnostic difference between Aenigmatoconcha and Chalepotaxis. Yet, in the present work, the four Aenigmatoconcha species clearly exhibited a well-developed penial sheath and flagellum. Hence, the only difference between Chalepotaxis and Aenigmatoconcha is the presence of a flagellum in the latter (Páll-Gergely et al. 2016). In addition to the genitalia without a dart apparatus, the presence of well-developed anterior and posterior left dorsal lobes is a significant character of Aenigmatoconcha, while Sophina has an undivided left dorsal lobe and a dart apparatus (Blanford & Godwin-Austen 1908; Sutcharit et al. 2020a). However, information on the mantle lobe morphology of Chalepotaxis was not available for comparison. Among Southeast Asian helicarionoid genera with uniform and spatulate-shaped radula, Sophina is the only genus that a dart apparatus present in genitalia, but a flagellum absent. While genitalia of Aenigmatoconcha lack dart apparatus, but contain the flagellum, and genitalia of Chalepotaxis lack both organs. Generally, some characters of genital anatomy, such as a penial caecum, penial verge, dart apparatus, or flagellum, have been hypothesized to evolve repeatedly during the evolution of land snails, and have been noticed in many groups of terrestrial pulmonate snails (Solem 1966; Hausdorf 1998; Hyman & Ponder 2010; Hirano et al. 2014; Köhler & Criscione 2015; Köhler et al. 2020; Sutcharit et al. 2020a). However, the classification of these three genera based on the presence or absence of the dart apparatus and flagellum is consistent with the molecular phylogeny (Sutcharit et al. 2020a). From the East of Tenasserim Range to northeastern Thailand, three Aenigmatoconcha species occurred in a few limestone karsts, while only A. mitis occurs in many limestone karsts from central to western Thailand (Fig. 1). Aenigmatoconcha clivicola is confined to Loei Province, northeastern Thailand, while A. eunetis sp. nov. to Uthai Thani Province, central Thailand, and A. sumonthai to Chumphon Province, southern Thailand. The isolation explains the degree of endemism and the very high genetic divergence among sister lineages (9.7% to 12.0%) within Aenigmatoconcha. Regarding the West of Tenasserim Range, Sophina also reveals a high degree of endemism and localization with a pattern of one outcrop for one lineage in the Salween Basin, Southern Myanmar. These phenomena can be generally observed in karst-restricted animals because a very large number of ecological niches in karst ecosystems promote their evolutionary diversification and evolution of remarkably different lifestyles (Clements et al. 2006; Foon et al. 2017; Grismer et al. 2020; Sutcharit et al. 2020a). Therefore, our discovery enhances the understanding of karst biodiversity and supplements the information on terrestrial snails in Thailand available for efforts to establish well-planned and knowledge-based conservation procedures for Thai limestone protection in the future.
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- 2021
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9. Aenigmatoconcha sumonthai Tumpeesuwan & Tumpeesuwan 2018
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, and Panha, Somsak
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Stylommatophora ,Helicarionidae ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Aenigmatoconcha ,Aenigmatoconcha sumonthai ,Taxonomy - Abstract
Aenigmatoconcha sumonthai Tumpeesuwan & Tumpeesuwan, 2018 Figs 1, 2C–E, 7A–D, 8, 10C Aenigmatoconcha sumonthai Tumpeesuwan & Tumpeesuwan, 2018: 171–173, figs 2–6. Type locality: Tham Chang Phueak limestone range, Mueang District, Chumphon Province, southern Thailand. Material examined THAILAND • 45 sh, 20 sp; Chumphon Province, Mueang District, Limestone outcrops at Tham Chang Phuek Bureau of Monks; 10°26′50.0″ N, 99°02′07.1″ E; CUMZ 7922 • 40 sh; same collection data as for preceding; CUMZ 7923 • 18 sh, 10 sp; same collection data as for preceding; CUMZ 7937 • 45 sh, 6 sp; Chumphon Province, Mueang District, Limestone outcrops at Wat Tham Sanook; 10°28′51.3″ N, 99°04′28.3″ E; CUMZ 7924 • 10 sh, 7 sp; same collection data as for preceding; CUMZ 7925 • 22 sh, 11 sp; Chumphon Province, Sawi District, Limestone outcrops at Tham Nam Lod Thepnimit Bureau of Monks; 10°22′39.5″ N, 99°00′39.5″ E; CUMZ 7927 • 4 sh, 8 sp; Chumphon Province, Sawi District, Limestone outcrops at Wat Nam Cha; 10°17′57.0″ N, 99°01′58.5″ E; CUMZ 7926. Description SHELL (Fig. 7A–B). Shell strongly depressed to depressed, medium-sized (width 14.4–16.6 mm, height 7.0– 8.2 mm), thin, translucent, whitish colour, well-rounded to slightly shouldered body whorl, elevated spire, impressed suture, obvious varix, and open umbilicus. EXTERNAL FEATURES (Fig. 2C–E). Animal with five well-developed mantle lobes. Left and right shell lobes pale yellowish to fleshy-grey colour, usually with black margin, and with or without small to large black spots or blotches. Three dorsal lobes crescent-shaped and smaller than the other two shell lobes. Black stripes behind long tentacles. GENITALIA (Fig. 8). Atrium (at) enlarged and very short. Penis (p) long, cylindrical with thick penial sheath (ps) extending to half of penis length. Inner sculpture of penis with small conical penial pilasters (pp). Epiphallus (e1 + e2) as long as penis: e1 slender, and e2 bulbous. Inner sculpture of e1 with small thin longitudinal folds, while e2 with small papillae arranged in oblique rows. Epiphallic caecum (ec) short with thin penial retractor muscle (prm) attached at tip. Flagellum (fl) small and short. RADULA (Fig. 10C). Teeth arranged in anteriorly V-shaped rows with half row consisting of about 63– 65 teeth at the middle plate. All teeth monocuspid and spatulate-shaped with curved cusp. Distribution Aenigmatoconcha sumonthai has a narrow distribution, with populations living on a few limestone hills in Chumphon Province (Fig. 1). We extended our survey, especially among limestone sites about 200 km southwards down to southern peninsular Thailand, but we could not find this species elsewhere. Remarks The lack of a penial sheath and flagellum in the male reproductive organs of A. sumonthai was originally reported to be similar to A. clivicola (Tumpeesuwan & Tumpeesuwan, 2018: 174, fig. 6). In this study, based on topotypic specimens, however, A. sumonthai was found to have a large and thickened penial sheath and small flagellum encircled with loose tissue (Fig. 8). Aenigmatoconcha sumonthai shows variation in the black blotches on both shell lobes ranging from absent (Fig. 2E) to the lobes almost entirely covered (Fig. 2C). The DNA sequence analysis suggested that these variations formed a clade of A. sumonthai (Fig. 2). In addition, this species develops a calcareous epiphragm with a small perforation to limit body-water evaporation but allowing respiratory gas exchange during dormancy (Fig. 7C, D).
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- 2021
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10. Aenigmatoconcha clivicola Tumpeesuwan & Tumpeesuwan 2017
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, and Panha, Somsak
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Stylommatophora ,Helicarionidae ,Mollusca ,Gastropoda ,Aenigmatoconcha clivicola ,Animalia ,Biodiversity ,Aenigmatoconcha ,Taxonomy - Abstract
Aenigmatoconcha clivicola Tumpeesuwan & Tumpeesuwan, 2017 Figs 1, 2A, 4A–B, 5, 10A Aenigmatoconcha clivicola Tumpeesuwan & Tumpeesuwan, 2017: 184–187, figs 2–5. Type locality: Phu Pha Lom Limestone Hill in Mueang District, Loei Province, northeastern Thailand. Aenigmatoconcha clivicola – Tumpeesuwan & Tumpeesuwan 2018: 171. Material examined THAILAND • 39 sh, 22 sp; Loei Province, Mueang District, Phu Pha Lom Limestone Hill; 17°33′16.6″ N, 101°52′05.4″ E; CUMZ 7928 • 6 sh, 12 sp; same collection data as for preceding; CUMZ 7929 • 48 sh; Loei Province, Na Duang District, Limestone outcrops at Wat Tham Pha Ya; 17°34′40.1″ N, 101°53′35.1″ E; CUMZ 7930. Description SHELL (Fig. 4A–B). Shell strongly depressed to depressed, medium-sized (shell width 17.2–20.1 mm, shell height 8.6–10.0 mm), rather thin to slightly solid and translucent, milky to pale whitish-horny colour, well-rounded body whorl, little elevated spire, impressed suture, obvious varix, and open umbilicus. EXTERNAL FEATURES (Figs 2A, 5A). Animal with five well-developed mantle lobes. Left and right shell lobes thin, pale yellowish to fleshy-grey colour and spread with small whitish dots. Three dorsal lobes crescent-shaped and smaller than shell lobes. GENITALIA (Fig. 5B–D). Atrium (at) enlarged and very short. Penis (p) rather long cylindrical, penial sheath (ps) very thick and covering entire penis, and penial caecum (pc) rather small protruding. Inner wall of penis covered with trapezoid-shaped penial pilasters (pp) arranged in oblique rows. Epiphallus (e1 + e2) as long as penis: e1 long and slender, and e2 bulbous and about half e1 length. Inner sculpture of e1 with very small and thin longitudinal folds to nearly smooth surface. Inner sculpture of e2 trapezoid to conical pilasters. Epiphallic caecum (ec) long with thick penial retractor muscle (prm) attached at tip. Flagellum (fl) small and short. RADULA (Fig. 10A). Teeth arranged in anteriorly V-shaped rows with half row consisting of about 70– 76 teeth at middle plate. Central, lateral, and marginal teeth monocuspid and spatulate-shaped with curved cusp. Distribution This species is currently known only from 2 localities: the type locality (Phu Pha Lom) and limestone hills in Loei Province (Fig. 1). Remarks The genitalia were originally described but without examination of the internal sculpture of penis. In this study, we examined 20 adult topotypic specimens to provide descriptions of the penial sheath, penial caecum, and flagellum that were not included in the original description. The penial sheath is very large and covers the entire penis (Fig. 5B). The short penial caecum, an extension of the penis, is located near the penis and epiphallus junction (Fig. 5B). This character is visible when penial sheath is removed. Its internal sculpture is rather smooth, unlike the penial sculpture, with its trapezoid-shaped pilasters (Fig. 5C). The Australian helicarionids, Nitor whitneyae Stanisic, 2010 has a penial caecum while other Nitor taxa do not have a penial caecum (Hyman & Köhler 2018). In Southeast Asian ariophantids, the presence or absence of a penial caecum is a discriminating character among species in genera such as Macrochlamys Gray, 1847 and Taphrenalla Pholyotha & Panha, 2020, and is supported by molecular studies (Pholyotha et al. 2018, 2021). The flagellum of A. clivicola is an extension of the epiphallus and is located near the insertion point of the vas deferens. It is somewhat small and short, and bound to the vas deferens by thin connective tissue. This feature is important for spermatophore formation before copulation (Tompa 1984; Baur 2010). However, during this study no spermatophores were observed in A. clivicola., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros & Panha, Somsak, 2021, Systematic revision of the limestone karst-restricted land snail genus Aenigmatoconcha (Eupulmonata: Helicarionidae), with description of a new species, pp. 55-82 in European Journal of Taxonomy 767 on pages 64-66, DOI: 10.5852/ejt.2021.767.1487, http://zenodo.org/record/5528134, {"references":["Tumpeesuwan C. & Tumpeesuwan S. 2017. Discovery of an overlooked helicarionid land snail (Helicarionidae: Durgellinae) from northeastern Thailand, with description of a new genus and new species, and a note on radula morphology and genital system. Raffles Bulletin of Zoology 65: 174 - 181. Tumpeesuwan C. & Tumpeesuwan S. 2018. Aenigmatoconcha sumonthai, a new helicarionid land snail from Chumphon Province, Southern Thailand (Helicarionidae: Durgellinae). Raffles Bulletin of Zoology 66: 170 - 176. http: // doi. org / 10.5281 / zenodo. 4504598","Pfeiffer L. 1863. Descriptions of thirty-six new land shells from the collection of H. Cuming, Esq. Proceedings of the Zoological Society of London 30: 268 - 278. [Published in parts, dates follow Duncan (1937)].","Pholyotha A., Sutcharit C., Tongkerd P. & Panha S. 2020 b. Integrative taxonomic revision of the land snail genus Sarika Godwin-Austen, 1907 in Thailand, with descriptions of nine new species (Eupulmonata, Ariophantidae). ZooKeys 976: 1 - 100. https: // doi. org / 10.3897 / zookeys. 976.53859","Pholyotha A., Sutcharit C. & Panha S. 2018. The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae). Raffles Bulletin of Zoology 66: 763 - 781.","Pholyotha A., Sutcharit C., Tongkerd P., Jeratthitikul E. & Panha S. 2021. Integrative systematics reveals the new land-snail genus Taphrenalla (Eupulmonata: Ariophantidae) with a description of nine new species from Thailand. Contributions to Zoology 90 (1): 21 - 69. https: // doi. org / 10.1163 / 18759866 - BJA 10013","Tompa A. S. 1984. Land snails (Stylommatophora). In: Tompa A. S. & Verdonk N. H. (eds) The Mollusca, Vol. 7: Reproduction: 47 - 140. Academic Press, London.","Baur B. 2010. Stylommatophoran Gastropods. In: Leonard J. L. & Cordoba-Aguilar A. (eds) The Evolution of Primary Sexual Characters in Animals: 197 - 217. Oxford University Press, USA."]}
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11. Systematic revision of the limestone karst-restricted land snail genus Aenigmatoconcha (Eupulmonata: Helicarionidae), with description of a new species
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, Tongkerd, Piyoros, additional, and Panha, Somsak, additional
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- 2021
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12. Molecular phylogenetic and morphological evidence reveal a rare limacoid snail genus, Khmerquantula gen. nov. (Eupulmonata: Dyakiidae) from Cambodia
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Pholyotha, Arthit, Sutcharit, Chirasak, Jirapatrasilp, Parin, Ngor, Peng Bun, Oba, Yuichi, and Panha, Somsak
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An enigmatic land snail species restricted to the karst ecosystem in southern Cambodia and formerly placed in the family Ariophantidae is now reclassified into the family Dyakiidae. Its current systematic position is based on morpho-anatomical characters combined with a molecular phylogeny based on two partial mitochondrial markers (COI and 16S rDNA) and a nuclear gene fragment (28S rDNA). Our results indicate that Khmerquantula gen. nov. is a member of the Dyakiidae with very strong support from both morphological and molecular phylogenetic analyses. The diagnostic characters of this new genus and new species, Khmerquantula leipo are a dextral shell with a well-polished surface, animal with only three dorsal lobes, and reproductive organ without penial verge and amatorial organ papilla. This finding adds a new taxon to current biodiversity and illustrates the growing knowledge of the endemic malacofauna in Cambodia. http://zoobank.org/urn:lsid:zoobank.org:pub:5E5201B1-5BE6-452F-8D1A-B292DBA4AC25 http://zoobank.org/urn:lsid:zoobank.org:act:0D0414A4-FDA5-4E59-BAFE-1E1B68F37E36 http://zoobank.org/urn:lsid:zoobank.org:act:E08633F4-F5E1-4D99-8C70-252DF349C39A
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- 2021
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13. Uncovering local endemism from southeastern Myanmar: description of the new karst-associated terrestrial snail genus Burmochlamys (Eupulmonata, Helicarionidae).
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Pholyotha, Arthit, Sutcharit, Chirasak, Aung Lin, and Panha, Somsak
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SNAILS , *WATERSHEDS , *GENITALIA , *KARST , *FASCIOLA , *MARBLE sculpture - Abstract
Salween River basin’s karst ecosystems in southeastern Myanmar remain largely unexplored and are likely to harbour a high terrestrial snail diversity that are often associated with high levels of snail endemism. Here, an outstanding group of new karst-associated terrestrial snails, Burmochlamys gen. nov., are discovered. A study of the comparative morphological and anatomical data reveals that the reproductive tract and radula of this new genus are closely related to the helicarionid genus Sophina Benson, 1859 but shell morphology (shape, size, and sculpture) and mantle extensions are distinct from the latter genus. Burmochlamys gen. nov. now consists of four known nominal species, B. cassidula comb. nov., B. cauisa comb. nov., B. perpaula comb. nov., and B. poongee comb. nov., and five new species; B. albida sp. nov., B. fasciola sp. nov., B. moulmeinica sp. nov., B. versicolor sp. nov., and B. whitteni sp. nov. The highlight is that the members of the new genus show site-specific endemism, being restricted to karstic habitat islands of the Salween River basin. In addition, the discovery supports that the unique and complex structure of Salween River basin’s karst ecosystems are habitats in which the terrestrial malacofauna have speciated and become endemic. [ABSTRACT FROM AUTHOR]
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- 2022
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14. Sarika khmeriana Pholyotha & Sutcharit & Thach & Chhuoy & Ngor & Panha 2020, sp. nov
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Pholyotha, Arthit, Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun, and Panha, Somsak
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Sarika ,Stylommatophora ,Mollusca ,Sarika khmeriana ,Gastropoda ,Animalia ,Biodiversity ,Ariophantidae ,Taxonomy - Abstract
Sarika khmeriana Pholyotha & Panha sp. nov. urn:lsid:zoobank.org:act: 13BEB7E0-40BD-480C-ABA7-72798C9E6AF2 Table 1; Figs 4 A���B, 5, 6A���F Diagnosis Sarika khmeriana sp. nov. can be characterized by a large, depressed shell, rounded on the periphery. Shell colour dark brownish and usually with pale brownish (to whitish) umbilical area. Animal has dark grey body and left shell lobe is absent. Genitalia have rather long epiphallic caecum and inner wall of penis sculptured with triangular prism penial pilasters. Spermatophore head filament with irregularly serrated longitudinal folds; tail filament bearing two spines near sperm sac and branching spines along the entire tail filament length. Etymology The specific epithet ��� khmeriana ��� refers to the Khmer Empire, of which Cambodia is the residual state. Material examined Holotype CAMBODIA ��� 1 shell (width 24.2 mm, height 12.3 mm); Kampot Province, Dang Tong District, limestone outcrops near Totong Temple, locality code C041; 10��41���59.8��� N, 104��31���30.1��� E; CUMZ 7904. Paratypes CAMBODIA ��� 6 shells, 11 alcohol-preserved specimens; same collection data as for holotype; CUMZ 7905 ��� 2 shells; same collection data as for preceding; NHMUK ��� 2 shells; same collection data as for preceding; ZRC. Other material CAMBODIA ��� 24 shells, 17 alcohol-preserved specimens; Kampot Province, Banteay Meas District, limestone outcrops at Prasat Phnom Totong Temple, locality code C042; 10��41���47.9��� N, 104��31���25.5��� E; CUMZ 7906. Description SHELL (Fig. 4 A���B). Depressed, large (shell width up to 24.2 mm, shell height up to 12.3 mm), rather thin, semi-translucent. Shell colour dark brownish on upper surface and at periphery; below periphery surrounding umbilicus pale to very pale brownish. Shell surface smooth, glossy; more glossy below periphery; suture rather shallow with narrow, whitish subsutural band. Spire slightly elevated; whorls 6���6��, increasing regularly; last whorl broadly rounded on periphery. Aperture obliquely crescentshaped; peristome simple. Columellar margin simple, slightly reflected near umbilicus. Umbilicus somewhat narrow and deep. EXTERNAL FEATURES (Fig. 5A). Living animals have monochrome dark grey body with pale grey foot sole. Caudal foss present; caudal horn elevated and large. Mantle edge well developed with three dorsal lobes and one shell lobe (see Pholyotha et al. 2018: fig. 1). Shape and size of dorsal lobes and right shell lobe (left shell lobe absent) similar to previous species. GENITALIA (Fig. 5 B���C). Atrium (at) enlarged, very short. Penis (p) cylindrical, with thin penial sheath covering proximal penis. Inner sculpture of penis very finely folded to nearly smooth then gradually transformed to triangular prism (rhombic base and acute angle on top) penial pilasters (pp) near epiphallus. Epiphallus (e) cylindrical, elongate, about two times penis length. Epiphallic caecum (ec) large, similar diameter as penis, straight and located near middle of epiphallus. Penial retractor muscle (prm) thin, attached at tip of epiphallic caecum. Flagellum (fl) slender, somewhat long, about 1.5 times epiphallus length. Vas deferens (vd) a thin tube. Vagina (v) cylindrical, similar length as penis. Dart apparatus (da) cylindrical, rather large, long, attached to atrium at penis and vagina junction. Gametolytic sac (gs) enlarged, bulbous (spermatophore inside); gametolytic duct (gd) long, cylindrical. Free oviduct (fo) cylindrical, longer than vagina, proximal end encircled with thickened tissue. Oviduct large lobules; prostate gland running alongside oviduct. SPERMATOPHORE (Fig. 6 A���F). Sperm sac (ss) enlarged, elongate-oval. Head filament (hf) enlarged (most was missing) with irregularly serrated longitudinal folds. Tail filament (tf) very long tube, region close to sperm sac bearing two spines. Spine I simple, short; spine II with complicated branching into small, numerous spinules. Spines on tail filament starting just after spine II, with complicated branching into spinules, arranged alternate (Fig. 7D) or opposite (Fig. 7F). RADULA (Fig. 5D). Teeth arranged in wide-angle U-shape with half row formula: 1���(13���14)���55 teeth. Central tooth symmetrical tricuspid with triangular-shaped mesocone; ectocones very small. Lateral teeth asymmetrical tricuspid; mesocone large, pointed cusp; endocone small, located near the tip; ectocone larger than endocone, pointed cusp, located in middle of tooth. Marginal teeth occurring around tooth numbers 13���14, obliquely bicuspid; endocone elongate, pointed cusp; ectocone small, pointed cusp. Outermost teeth gradually reduced in size as cusps to small teeth. Distribution This new species is known from two locations very close to each other, on limestone outcrops. Totong Mountain (type locality) is a small karst with an old quarry, surrounded by housing areas and is adjacent to paddy fields (Fig. 1). The second locality, Prasat Phnom Totong, about 500 m south of the type locality, is a very large and active mining site of a cement factory. Remarks Sarika khmeriana sp. nov. is quite similar in terms of shell shape with S. lactoconcha sp. nov., but this species is distinct in possessing dark brown shell on upper surface and pale brownish (to whitish) surrounding umbilicus, and left shell lobe absent (four mantle lobes); whereas S. lactoconcha sp. nov. has a monochrome pale milky shell, and well-developed left shell lobe (five mantle lobes). This new species differs from S. resplendens in having a thin penial retractor muscle and the entire tail filament of spermatophore has branching spines, whereas the genitalia of S. resplendens (see Godwin-Austen 1907: fig. 3) have a large and thickened penial retractor muscle, and the tail filament of spermatophore is without a branching spine. Compared with other species of Sarika from Cambodia, S. khmeriana sp. nov. is rounded on the periphery while S. bocourti is obtusely angulated on the periphery, and this new species has a larger shell diameter than S. benoiti. Sarika khmeriana sp. nov. also differs from M. despecta (Mabille, 1887) from northern Vietnam in having an elevated spire and narrower umbilical opening., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun & Panha, Somsak, 2020, Land snail genus Sarika Godwin-Austen, 1907 (Eupulmonata: Ariophantidae) from Cambodia, with description of three new species, pp. 1-21 in European Journal of Taxonomy 674 on pages 11-15, DOI: 10.5852/ejt.2020.674, http://zenodo.org/record/3908375, {"references":["Pholyotha A., Sutcharit C. & Panha S. 2018. The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae). Raffles Bulletin of Zoology 66: 763 - 781."]}
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- 2020
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15. Sarika nana Pholyotha & Sutcharit & Thach & Chhuoy & Ngor & Panha 2020, sp. nov
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Pholyotha, Arthit, Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun, and Panha, Somsak
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Sarika ,Stylommatophora ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Ariophantidae ,Sarika nana ,Taxonomy - Abstract
Sarika nana Pholyotha & Panha sp. nov. urn:lsid:zoobank.org:act: 48DF9AB1-369C-4930-A006-9E57AE9DBACB Table 1; Figs 4 C–D, 6G–J, 7 Diagnosis Sarika nana sp. nov. can be characterized by medium shell size, globosely depressed, pale yellowishbrown shell, and well-rounded periphery. Animal has dark grey body and five mantle lobes. Genitalia have a rather long epiphallic caecum, short penial caecum, rather large penial verge and oval-shaped penial pilasters. Spermatophore has smooth head filament and tail filament near sperm sac bearing two spines, and terminal one-third of tail filament contains a series of short branching spines. Etymology The specific epithet ‘ nana ’ is from the Latin word ‘ nanus ’ meaning “dwarf” and refers to the small-sized species in this genus. Material examined Holotype CAMBODIA • 1 shell (width 12.6 mm, height 6.8 mm); Takeo Province, Kiri Vong District, the conglomerate hills at Phnom Bayang Temple, locality code C036; 10°38′28.2″ N, 104°50′35.8″ E; CUMZ 7907. Paratypes CAMBODIA • 24 alcohol-preserved specimens; same collection data as for holotype; CUMZ 7908 • 2 shells; same collection data as for preceding; NHMUK • 2 shells; same collection data as for preceding; ZRC. Description SHELL (Fig. 4 C–D). Globosely depressed, medium-sized (shell width up to 12.3 mm, shell height up to 6.8 mm), thin, rather translucent. Shell surface smooth, shiny; more shiny below periphery; shell colour pale yellowish brown. Entire shell consisting of 5½–6 whorls increasing regularly, separated by shallow suture. Spire slightly elevated; last whorl broad, well-rounded. Aperture obliquely oval-lunate shaped. Peristome simple. Columellar margin simple, slightly expanded near umbilicus. Umbilicus opened, wide, deep. EXTERNAL FEATURES (Fig. 7A). Living animals having monochrome pale grey body, foot sole. Caudal foss, large caudal horn present. Mantle edge well developed, dark colour, with three dorsal lobes and two shell lobes (see Pholyotha et al. 2018: fig. 1). Dorsal lobes and shell lobes similar to those of S. lactoconcha sp. nov. GENITALIA (Fig. 7 B–C). Atrium (at) very short. Penis (p) short, cylindrical with thin penial sheath covering proximal penis. Distal penis slightly enlarged with penial caecum (pc), corresponding to penial verge. Inner sculpture of penis proximally with smooth surface then transformed to thickened, corrugated transverse-folded penial pilasters (pp) surrounding penial verge near distal end. Penial verge (pv) large with blunt tip. Epiphallus (e) cylindrical, about twice penis length. Epiphallic caecum (ec) similar diameter as epiphallus, straight, located near proximal epiphallus. Penial retractor muscle (prm) thin, attached at tip of epiphallus. Flagellum (fl) slender, short, about half the length of epiphallus. Vas deferens (vd) thin tube. Vagina (v) cylindrical, little longer than penis. Dart apparatus (da) cylindrical, rather large and long, connected to atrium at vagina and penis junction. Gametolytic sac (gs) enlarged, bulbous (spermatophore inside); gametolytic duct (gd) cylindrical, long. Free oviduct (fo) cylindrical, same length as vagina, proximal end encircled with thickened, brownish tissue. Oviduct enlarged lobules; prostate gland running alongside oviduct. SPERMATOPHORE (Fig. 6 G–J). Sperm sac (ss) enlarged, elongate-oval. Head filament (hf) located subapical of sperm sac, with long, smooth surface. Tail filament (tf) about two times longer than sperm sac, region close to sperm sac bearing two spines. Spine I simple, curved, with dull tip. Spine II large, branching into spinules (antler like). Region furthest away smooth, without spine; terminal part (about one-fourth of its length) consisting of short to long branching spines arranged in row or encircling tip. RADULA (Fig. 7D). Teeth arranged in wide-angle U-shape with half row formula: 1–(10–11)–46 teeth. Central tooth symmetrical tricuspid; mesocone large, lanceolate shape; ectocones small with triangular shape. Lateral teeth asymmetrical tricuspid with large, pointed cusp mesocone; endocone small, pointed cusp, located near tip; ectocone rather large, triangular-shaped, located in middle of tooth. Marginal teeth starting around tooth numbers 10–11, obliquely bicuspid; endocone elongate, pointed cusp; ectocone small, pointed cusp. Outermost teeth gradually smaller in size from lateral teeth to edge. Distribution This new species is known only from the conglomerate mountain Phnom Bayang (type locality; Fig. 1). The habitat at the collection site is an evergreen forest mixed with fruit orchards and with outcroppings of large granite boulders. This location is surrounded by villages and is adjacent to paddy fields. Remarks Sarika nana sp. nov., a medium-sized species, can be distinguished from all species of Sarika recorded from mainland Indochina by having a penial verge. Compared to medium-sized species of Macrochlamys, body whorl of S. nana sp. nov. is relatively broader and more well-rounded on the periphery, umbilicus is relatively wider and aperture opening is less convex than M. excepta (Mabille, 1887) (Fig. 4E) and M. zero (Mabille, 1887) (Fig. 4F). The type locality of the new species is about 1000 km from the two species described from Northern Vietnam. The Thai species M. brunnea Möllendorff, 1902 has much narrower umbilical opening than this new species (see Pholyotha et al. 2018: fig. 8a). Unfortunately, the anatomical data of M. brunnea, M. excepta and M. zero is unavailable for further comparison.
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16. Sarika Godwin-Austen 1907
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Pholyotha, Arthit, Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun, and Panha, Somsak
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Sarika ,Stylommatophora ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Ariophantidae ,Taxonomy - Abstract
Genus Sarika Godwin-Austen, 1907 Sarika Godwin-Austen, 1907: 179. ��� Blanford & Godwin-Austen 1908: 276. ��� Zilch 1959: 325. ��� Schileyko 2002: 1288. ��� Pholyotha et al. 2020. Type species Helix resplendens Philippi, 1846, by original designation., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun & Panha, Somsak, 2020, Land snail genus Sarika Godwin-Austen, 1907 (Eupulmonata: Ariophantidae) from Cambodia, with description of three new species, pp. 1-21 in European Journal of Taxonomy 674 on page 5, DOI: 10.5852/ejt.2020.674, http://zenodo.org/record/3908375, {"references":["Blanford W. T. & Godwin-Austen H. H. 1908. Mollusca: Testacellidae and Zonitidae. In: Bingham CT (ed.) The Fauna of British India including Ceylon and Burma. Taylor and Francis, London.","Zilch A. 1959. Gastropoda, Euthyneura. In: Schindewolf O. H. (ed.) Handbuch der Palaozoologie, Volume 6: 1 - 400. Gebruder Borntraeger, Berlin.","Pholyotha A., Sutcharit C., Tongkerd P., Lin A. & Panha S. 2020. Taxonomic revision of the land snail genera Macrochlamys Gray, 1847 and Sarika Godwin-Austen, 1907 (Eupulmonata: Ariophantidae) from Southeastern Myanmar, with descriptions of three new species. Molluscan Research 40: 183 - 204. https: // doi. org / 10.1080 / 13235818.2020.1723041","Philippi R. A. 1846. Vier neue Konchylienarten. Zeitschrift fur Malakozoologie 3: 191 - 192."]}
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- 2020
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17. Integrative systematics reveals the new land-snail genus Taphrenalla (Eupulmonata: Ariophantidae) with a description of nine new species from Thailand
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, Tongkerd, Piyoros, additional, Jeratthitikul, Ekgachai, additional, and Panha, Somsak, additional
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- 2020
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18. Integrative taxonomic revision of the land snail genus Sarika Godwin-Austen, 1907 in Thailand, with descriptions of nine new species (Eupulmonata, Ariophantidae)
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, Tongkerd, Piyoros, additional, and Panha, Somsak, additional
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- 2020
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19. Annotated checklist of freshwater molluscs from the largest freshwater lake in Southeast Asia
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Ng, Ting Hui, primary, Jeratthitikul, Ekgachai, additional, Sutcharit, Chirasak, additional, Chhuoy, Samol, additional, Pin, Kakada, additional, Pholyotha, Arthit, additional, Siriwut, Warut, additional, Srisonchai, Ruttapon, additional, Hogan, Zeb S., additional, and Ngor, Peng Bun, additional
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- 2020
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20. Annotated checklist of the land snail fauna from southern Cambodia (Mollusca, Gastropoda)
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Sutcharit, Chirasak, primary, Thach, Phanara, additional, Chhuoy, Samol, additional, Ngor, Peng Bun, additional, Jeratthitikul, Ekgachai, additional, Siriwut, Warut, additional, Srisonchai, Ruttapon, additional, Ng, Ting Hui, additional, Pholyotha, Arthit, additional, Jirapatrasilp, Parin, additional, and Panha, Somsak, additional
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- 2020
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21. Land snail genus Sarika Godwin-Austen, 1907 (Eupulmonata: Ariophantidae) from Cambodia, with description of three new species
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Pholyotha, Arthit, primary, Sutcharit, Chirasak, additional, Thach, Phanara, additional, Chhuoy, Samol, additional, Ngor, Pen Bun, additional, and Panha, Somsak, additional
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- 2020
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22. Rediscovering the dancing semislug genus Cryptosemelus Collinge, 1902 (Eupulmonata, Ariophantidae) from Thailand with description of two new species.
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Pholyotha, Arthit, Sutcharit, Chirasak, and Panha, Somsak
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SPECIES , *INSECT anatomy , *PENIS , *ANATOMY , *LIMESTONE ,BEETLE anatomy - Abstract
Knowledge of Thai semislugs remains scarce, especially the dancing semislug genus Cryptosemelus. Prior to the present study, only a single species has been recognized with little available information. To address this knowledge gap, we surveyed for semislugs in western and southern Thailand, which yielded three species belonging to the genus Cryptosemelus. The little-known type species C. gracilis is redescribed herein, including a comparison with the type specimens. Two additional species, C. betarmon sp. nov. and C. tigrinus sp. nov., are described as new to science. All three species are characterized by differences in their genital anatomy, especially with respect to anatomical details of the penis, epiphallus, and spermatophore. In addition, C. tigrinus sp. nov. differs from C. gracilis and C. betarmon sp. nov. in the mantle color pattern. [ABSTRACT FROM AUTHOR]
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- 2021
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23. Annotated checklist of the terrestrial molluscs from Laos (Mollusca, Gastropoda)
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Inkhavilay, Khamla, Sutcharit, Chirasak, Bantaowong, Ueangfa, Chanabun, Ratmanee, Siriwut, Warut, Pholyotha, Arthit, Jirapatrasilp, Parin, and Panha, Somsak
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land snail ,conservation ,Biodiversity ,new name ,Indochina ,type specimen ,Southeast Asia - Abstract
The land area of Laos is composed of a large variety of undisturbed habitats, such as high mountainous areas, huge limestone karsts and the lower Mekong Basin. Therefore, Laos is expected to have a high species diversity, especially for the land snails. However, with respect to research on malacology, Laos is probably the least well-researched area for land snail diversity in Indochina (including Laos) over the past few centuries. The handful of species lists have never been systematically revised from the colonial period to the present, so these classifications are outdated. Herein we present the first comprehensive annotated checklist with an up-to-date systematic framework of the land snail fauna in Laos based on both field investigations and literature surveys. This annotated checklist is collectively composed of 231 nominal species (62 ‘prosobranch’ and 169 heterobranches), of which 221 nominal species are illustrated. The type specimens of 143 species from several museum collections and/or 144 species of newly collected specimens are illustrated. There are 58 species recorded as new to the malacofauna of the country, and two new replacement names are proposed as Hemiplecta lanxangnica Inkhavilay and Panha, nomen novum (Ariophantidae) and Chloritis khammouanensis Inkhavilay and Panha, nomen novum (Camaenidae). Four recently described species of the genus Amphidromus from Laos, “thakhekensis”, “richgoldbergi”, “attapeuensis” and “phuonglinhae” are synonymized with previously described species. In addition, thirteen nominal species are listed as uncertain records that may or may not occur in Laos. This annotated checklist may inspire malacologists to carry on systematic research in this region.
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- 2019
24. Macrochlamys coleus Pholyotha & Sutcharit & Panha 2018, new species
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Pholyotha, Arthit, Sutcharit, Chirasak, and Panha, Somsak
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Stylommatophora ,Mollusca ,Gastropoda ,Macrochlamys ,Animalia ,Biodiversity ,Ariophantidae ,Macrochlamys coleus ,Taxonomy - Abstract
Macrochlamys coleus Pholyotha & Panha, new species (Figs. 2B, 3C, D, 4F–I, 6D–F) Material examined. Holotype (Fig. 3C; shell height 6.6 mm, shell width 13.0 mm, aperture height 5.0 mm, aperture width 6.2 mm, 5½ whorls) (CUMZ 7104), limestone outcrops at Wat Sunantha Wanaram (Temple), Sai Yok District, Kanchanaburi Province, Thailand, 14° 32′01.6″N, 98° 50′13.8″E. Paratypes: one shell (Fig. 3D; shell height 6.0 mm, shell width 12.3 mm, aperture height 4.5 mm, aperture width 6.1 mm, 5¼ whorls) (CUMZ 7105), 10 specimens (CUMZ 7106), same data as holotype. Etymology. The specific epithet “ coleus ”, from the Latin word meaning “sheath”, refers to the well-developed tissue covering between the vagina and dart apparatus. Description. Shell medium-sized (Fig. 3C, D; shell height up to 6.6 mm; shell width up to 13.0 mm), dextral, depressed, slightly thick, translucent brown in colour. Shell surface nearly smooth, with very fine growth lines. Embryonic shell surface smooth, with about 2½ whorls. Whorls 5–6, increasing regularly. Suture wide and shallow, channel-shaped. Spire depressed, apex slightly raised with spire angle of about 148–152°. Last whorl well rounded. Aperture crescent ovoid shaped, obliquely open, with simple lip. Columellar margin little developed and slightly reflected near umbilicus. Umbilicus narrowly open. Genital organs. Atrium (at) short. Penis prolonged, cylindrical-shaped with rounded bulge corresponding to penial verge. Penial caecum (pc) slightly prolonged. Epiphallus (e) slender tube about two times longer than penis. Epiphallic caecum (ec) coiled about one circle, located at middle of epiphallus and attached with thick penial retractor muscle (prm). Flagellum (fl) short, cylindrical shaped and stretched around half of epiphallus length. Vas deference (vd) a thin tube connected between distal end of epiphallus and free oviduct (Fig. 4F). Inner penial wall supported proximally with small and irregular wrinkled penial pilasters (pp), distally with thin longitudinal and wrinkled folds. Penial verge (pv) very small and short, situated at distal end of penis (Fig. 4G). Vagina (v) slightly long, almost same length as penis and cylindrical. Dart apparatus (da) long, enlarged cylindrical shape, located at proximal end of vagina, with thick connective tissue encircled at proximal end (asterisk in Fig. 4F). Gametolytic sac (gs) elongate and bulbous. Gametolytic duct (gd) long and cylindrical (one spermatophore in Fig. 4F). Free oviduct (fo) short, about similar length to flagellum, proximal end encircled with brownish tissue. Oviduct (ov) large lobules with prostate gland (pg) running alongside (Fig. 4F). Spermatophore long, needle-shaped and translucent (Fig. 4H). Head filament (hf) short, gradually tapering to a point (Fig. 4I). Sperm sac (ss) enlarged, cylindrical capsule-shaped with sperm mass. Tail filament (tf) long, curved with many spines. Region close to sperm sac bear a single trichotomous spine divided into three pointed tips. Middle region with a row of five, long curved spines. Region furthest away from sperm sac contains small cluster of short spines (Fig. 4H). Radula. Each row contains about 92 teeth with formula (45- (12-11)-1-(11-12)-46). Central tooth symmetric tricuspid. Lateral teeth asymmetric tricuspid. Marginal teeth obliquely bicuspid starting from tooth number 11–12 (Fig. 6D–F). External features. Animal with reticulated skin. Head, eye stalks and body dark grey, and tail orange (Fig. 2B). Caudal foss (cf) long and narrow. Caudal horn (ch) large and dark grey in colour. Mantle edge (shell lobes and dorsal lobes) well developed, orange with black pigmented spots spread all over. Shell lobes and dorsal lobes similar in morphology to M. aurantia new species. Snails secrete light orange slime when disturbed. Distribution and habitat. This new species is currently known only from the type locality, an area of limestone outcrops with a relatively low population density. The snails were mostly found on decaying leaf litter or sometimes climbing on limestone walls. Remarks. Macrochlamys coleus new species is distinguished by a depressed shell, dark brown in colour, and rather shallowly channelled suture. The genitalia have one circle of coiled epiphallic caecum, and dart apparatus with a thick connective tissue encircling the proximal end. Its spermatophore has a single trichotomously branched spine at the proximal end, five long spines in the middle, and a cluster of small spines at the distal end of tail filaments. Its radula morphology is very similar to M. aurantia. This new species is close to M. aurantia new species, but can be differentiated by its small last whorl and shallow channelshaped suture. Anatomically, the genitalia have a short flagellum and well-developed connective tissue surrounding the proximal end of the dart apparatus; characters missing in M. aurantia new species. In addition, the spermatophore of this new species has a trichotomous spine on the tail filament close to the sperm sac and a row of long and curved spines on the middle part of the tail filament, while M. aurantia new species has one dichotomous spine and two simple spines on the tail filament close to the sperm sac. This new species differs from M. hypoleuca (Blanford, 1865) and M. nebulosa (Blanford, 1865) from Myanmar by its depressed shell with a broad last whorl and dark brown shell colour. In comparison, M. hypoleuca has a two-toned shell that is brown above the periphery and white below, while M. nebulosa has a conoidal, depressed, shell that is bluntly angulated at the periphery., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak & Panha, Somsak, 2018, The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae), pp. 763-781 in Raffles Bulletin of Zoology 66 on page 769, DOI: 10.5281/zenodo.5460634, {"references":["Blanford WT (1865) Contributions to Indian Malacology, No. V. Descriptions of new land shells from Arakan, Pegu, and Ava; with notes on the distribution of described species. Journal of the Asiatic Society of Bengal, 34: 66 - 68."]}
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- 2018
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25. The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae)
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Pholyotha, Arthit, Sutcharit, Chirasak, and Panha, Somsak
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Stylommatophora ,Mollusca ,Gastropoda ,Animalia ,Biodiversity ,Ariophantidae ,Taxonomy - Abstract
Pholyotha, Arthit, Sutcharit, Chirasak, Panha, Somsak (2018): The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae). Raffles Bulletin of Zoology 66: 763-781, DOI: http://doi.org/10.5281/zenodo.5460634, {"references":["Albers JC (1860) Die Heliceen nach naturlicher Verwandtschaft systematisch geordnet, [MS edited by E. von Martens], ed. 2. Leipzig, Verlag von Welhelm Engelmann, 359 pp.","Ancey CF (1898) Notes malacologiques. A - Observation sur les mollusques terrestres et fluviatiles recueillies dans lIndo-Chine et particulierement au Laos par Henri Counillon. B - Description despeces nouvelle du centre dAfrique; C - Notes sur quelques coupes generiques ou sous-generiques de Mollusques. D - Description dun mollusque mediterraneen nouveau. Bulletin du Musee dHistoire Naturelle de Marseille, Serie II, 1 (1): 125-150.","AVMA [American Veterinary Medical Association] (2013) AVMA guidelines for the euthanasia of animals. https://www.avma. org/KB/Policies/Documents/euthanasia.pdf (Accessed 30 October 2018).","Barker GM (2001) The Biology of Terrestrial Molluscs. CABI publishing. Wallingford, Oxon, United Kingdom, 558 pp.","Benson WH (1832) Account of a new genus of land snails, allied to the genus Cyclostoma, of Lamarck; with a description of a species found on the outlying rocks of the Rajmahal range of Hills. Journal of the Asiatic Society of Bengal, 1: 11-14.","Benson WH (1834) Observation on a collection of land and freshwater shells formed in the Gangetic Provinces of India. Proceedings of the Zoological Society of London, 1: 89-94.","Benson WH (1836) Descriptive catalogue of terrestrial and fluviatile Testacea chiefly from the north-east frontier of Bengal. Journal of the Asiatic Society of Bengal, 5: 350-358.","Benson WH (1859) New Helicidae collected by W. Theobald, Esq., jun., in Burmah and the Khasia Hills, and described by W.H. Benson. Annals and Magazine of Natural History, Series 3, Volume 3: 387-393.","Benson WH (1860) Characters of new land-shells from Burmah and the Andamans. Annals and Magazine of Natural History, Series 3, Volume 6: 190-195.","Benson WH (1863) Characters of new land-shells from the Andaman Islands, Burmah, and Ceylon, and of the animal of Sophina. Annals and Magazine of Natural History, Series 3, Volume 11: 318-323.","Benson WH (1865) New land shells from Travancore, Western and Northern India. Annals and Magazine of Natural History, Series 3, Volume 15: 11-15.","Bieler R & Mikkelsen PM (1992-1998) Handbook of Systematic Malacology. Smithsonian Institution Libraries and the National Science Foundation, Washington, DC. USA. [Part 1, 1992: xiii, 1-625 pp.; Part 2, 1992: xiv, 627-1189; Parts 3 and 4, 1998: xv, 1193-1690].","Blanford WT (1865) Contributions to Indian Malacology, No. V. Descriptions of new land shells from Arakan, Pegu, and Ava; with notes on the distribution of described species. Journal of the Asiatic Society of Bengal, 34: 66-68.","Blanford WT (1905) Descriptions of Indian and Burmese land-shells referred to the genera Macrochlamys, Bensonia, Taphrospira, (gen. nov.), Microcystina, Euplecta, and Polita. Proceedings of the Zoological Society of London, 2: 441-447.","Blanford WT & Godwin-Austen HH (1908) Mollusca: Testacellidae and Zonitidae. In: Bingham CT (ed.), The Fauna of British India including Ceylon and Burma. Taylor and Francis, London. Pp. 1-311.","Chiba S & Cowie RH (2016) Evolution and extinction of land snails on oceanic islands. Annual Review of Ecology, Evolution, and Systematics, 47: 123-141.","Crosse H & Fischer P (1863) Note sur la faune malacologique de Cochinchine, comprenant la description des especes nouvelles ou peu connues. Journal de Conchyliologie, 11: 343-379.","Dall WH (1897) Note on land shells from the Malay Peninsula. The Nautilus, 11: 37-38.","Deshayes GP (1831) Limnaea lesson, Mollusques et Zoophytes, Helix vitrinoides. Magasin de Zoologie, 1: 26, pl. 26.","Fischer H & Dautzenberg P (1904) Catalogue des mollusques terrestres et fluviatiles de lIndo-China orientale cites jusqu'a ce jour. In: Pavie A (ed.) Mission Pavie Indo-Chine 1879-1895, Etudes Diverses, Zoologie, 3. Pp. 390-450.","Foon JK, Clements GR & Liew T-S (2017) Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia. ZooKeys, 682: 1-94.","Godwin-Austen HH (1883-1907) Land and Freshwater Mollusca of India, Including South Arabia, Baluchistan, Afghanistan, Kashmir, Nepal, Burmah, Pegu, Tenasserim, Malay Peninsula, Ceylon, and other Islands of the Indian Ocean. Taylor and Francis, London, Volume 1 (1883-1887): 67-206, pls. 13-62; Volume 2 (1898-1907): 47-238, pls. 70-117.","Gould AA (1844) Descriptions of land shells from the province of Tavoy, in British Burmah. Boston Journal of Natural History, 4: 452-459.","Gray JE (1847) A list of the genera of recent Mollusca, their synonyma and types. Proceedings of the Zoological Society, 15: 129-182.","Hausdorf B (1998) Phylogeny of the Limacoidea sensu lato (Gastropoda: Stylommatophora). Journal of Molluscan Studies, 64: 35-66.","Hemmen J & Hemmen C (2001) Aktualisierte liste der terrestrischen Gastropoden Thailands. Schriften zur Malakozoologie aus dem Haus der Natur-Cismar, 18: 35-70.","Hirano T, Kameda Y, Kimura K & Chiba S (2014) Substantial incongruence among the morphology, taxonomy, and molecular phylogeny of the land snails Aegista, Landouria, Trishoplita, and Pseudobuliminus (Pulmonata: Bradybaenidae) occurring in East Asia. Molecular Phylogenetics and Evolution, 70: 171-181.","Hyman IT & Ponder WF (2010) A morphological phylogenetic analysis and generic revision of Australian Helicarionidae (Gastropoda: Pulmonata: Stylommatophora), and an assessment of the relationships of the family. Zootaxa, 2462: 1-148.","Hyman IT & Ponder WF (2016) Helicarionidae (Gastropoda: Heterobranchia: Stylommatophora) of Lord Howe Island. Molluscan Research, 36: 84-107.","Hyman IT, de la Iglesia Lamborena I & Kohler F (2017) Molecular phylogenetics and systematic revision of the south-eastern Australian Helicarionidae (Gastropoda, Stylommatophora). Contributions to Zoology, 86: 51-95.","Koene JM & Schulenburg H (2005) Shooting darts: co-evolution and counter-adaptation in hermaphroditic snails. BMC Evolutionary Biology, 5: 25.","Laidlaw FF (1932a) New name for Sarama G.-A. Journal of Conchology, 19: 259.","Laidlaw FF (1932b) Notes on Ariophantidae from the Malay Peninsula, with descriptions of new genera. Proceedings of the Malacological Society of London, 20: 80-94.","Laidlaw FF (1933) A list of the land and fresh-water Mollusca of the Malay Peninsula. Journal of the Malaysian Branch of the Royal Asiatic Society, 11: 211-234.","Liew T-S, Schilthuizen M & Vermeulen JJ (2009) Systematic revision of the genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, northern Borneo. Zoological Journal of the Linnean Society, 157: 515-550.","Maassen WJM (2001) A preliminary checklist of the non-marine molluscs of West-Malaysia. \"A Handlist\". De Kreukel, Amsterdam, 155 pp.","Maneevong A (2000) Taxonomic Revision of Terrestrial Snails Genera Macrochlamys, Cryptozona and Hemiplecta in Thailand. Unpublished Master's Thesis, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 161 pp.","Mollendorff O von (1894) On a collection of land-shells from Samui Islands, Gulf of Siam. Proceedings of the Zoological Society of London, 62: 146-156.","Mollendorff O von (1902a) Binnenmollusken aus Hinterindien. 1. Land schnecken von Kelantan, Ostkuste der Halbinsel Malacca. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft, 34: 135-149.","Mollendorff O von (1902b) Binnenmollusken aus Hinterindien. 2. Neue arten und unterarten von Fruhstorfer in Siam gesammelt. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft, 34: 153-160.","Morelet A (1875) Series conchyliologiques comprenant Lenumeration de mollusques terrestres et fluviatiles recueillies pendant le cours de differents voyages ainsi que la description, de plusieurs especes nouvelles. IV. 4e livraison Indo-Chine: 227-377.","Morgan J de (1885) Mollusques terrestres & fluviatiles du royaume de Perak et des pays voisins (Presqu'ile Malaise). Bulletin de la Societe Zoologique de France, 10: 353-428.","Morlet L (1891) Contributions a la faune malacologique de lIndo- Chine. Journal de Conchyliologie, 39: 230-254.","Myers N, Mittermeier RA, Mittermeier CG, da Fonseca GAB & Kent J (2000) Biodiversity hotspots for conservation priorities. Nature, 403: 853-858.","Naggs F, Panha S & Raheem D (2006) Developing land snail expertise in South and Southeast Asia, a New Darwin Initiative Project. The Natural History Journal of Chulalongkorn University, 6: 43-46.","Panha S (1996) A checklist and classification of the land terrestrial pulmonate snail in Thailand. Walkerana, 8: 31-40.","Panha S (1997) A new species of Macrochlamys from Thailand (Stylommatophora: Ariophantidae). Malacological Review, 29: 101-105.","Pfeiffer L (1854) Descriptions of twenty-three species of Helicea, from the collection of H. Cuming, Esq. Proceedings of the Zoological Society of London, 22: 145-150.","Raheem DC, Taylor H, Ablett J, Preece RC, Aravind NA & Naggs F (2014) A systematic revision of the land snails of the Western Ghats of India. Tropical Natural History, Supplement 4: 1-294.","Schileyko AA (2002) Treatise on recent terrestrial pulmonate mollusks. Part 9. Helicarionidae, Gymnarionidae, Rhysotinidae, Ariophantidae. Ruthenica, Supplement 2: 1167-1307.","Schileyko AA (2003) Treatise on recent terrestrial pulmonate mollusks. Part 10. Ariophantidae, Ostracolethidae, Ryssotidae, Milacidae, Dyakiidae, Staffordiidae, Gastrodontidae, Zonitidae, Daudebardiidae, Parmacellidae. Ruthenica, Supplement 2: 1309-1466.","Schileyko AA (2011) Check-list of land pulmonate molluscs of Vietnam (Gastropoda: Stylommatophora). Ruthenica, 21: 1-68.","Solem A (1966) Some non-marine mollusks from Thailand, with notes on classification of the Helicarionidae. Spolia Zoologica Musei Hauniensis, 24: 1-110.","Stoliczka F (1871) Notes on the terrestrial Mollusca from the neighbourhood of Moulmein, with descriptions of new species. Journal of the Asiatic Society of Bengal, 40: 143-177.","Stoliczka F (1873) On the land shells of Penang Island, with descriptions of the animals and anatomical notes; part second, Helicacea. Journal of the Asiatic Society of Bengal, 42: 11-38.","Sutcharit C & Panha S (2008) Taxonomic re-evaluation of Sarika diadema (Dall, 1897) and S. asamurai (Panha, 1997), two endemic land snails from Thailand (Pulmonata: Ariophantidae: Macrochlamydinae). Raffles Bulletin of Zoology, 56: 95-100.","Sutcharit C, Tongkerd P, Tan S-HA & Panha S (2012) Taxonomic revision of Dyakia janus from peninsular Malaysia (Pulmonata: Dyakiidae), with notes on other sinistrally coiled helicarionoids. Raffles Bulletin of Zoology, 60: 279-287.","Thiele J (1931) Handbuch der systematischen Weichtierkunde. Erster Band, Tiel 2, Gastropoda: Ophisthobranchia and Pulmonata. Gustav Fischer Verlag, Jena, Germany, 377-788 pp. [English translation: Bieler & Mikkelsen, 1992-1998].","Winter AJ de (2008) Redefinition of Thapsia Albers, 1860, and description of three more helicarionoid genera from western Africa (Gastropoda, Stylommatophora). Zoologische Mededelingen, 82: 441-477.","Zilch A (1959) Gastropoda, Euthyneura. In: Schindewolf OH (ed.), Handbuch der Palaozoologie, Volume 6. Gebruder Borntraeger. Berlin, 400 pp."]}
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- 2018
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26. Macrochlamys kelantanensis Mollendorff 1902
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Pholyotha, Arthit, Sutcharit, Chirasak, and Panha, Somsak
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Stylommatophora ,Mollusca ,Gastropoda ,Macrochlamys ,Animalia ,Macrochlamys kelantanensis ,Biodiversity ,Ariophantidae ,Taxonomy - Abstract
Macrochlamys kelantanensis Möllendorff, 1902 (Figs. 2F, 8B–D, 9C, D, 10G–I) Macrochlamys hardwickei kelantanensis Möllendorff, 1902a: 137 (type locality: Kelantan, Ostküste der Halbinsel Malacca [Kelantan, east coast of Peninsula Malaysia]) – Maassen, 2001: 110. Material examined. Holotype (SMF 227098), one paratype shell (SMF 227099), Kelantan, east coast of Peninsula Malaysia. Non type material: THAILAND. five shells (CUMZ 7120), 16 specimens (CUMZ 7121), Mae Chan District, Chiang Rai Province, 20° 08′38.7″N 99° 51′21.4″E; 32 specimens (CUMZ 7122), Nong Han, San Sai District, Chiang Mai Province, 18° 53′23.7″N 98° 59′54.7″E; two specimens (CUMZ 7123) Mae Sot District, Tak Province, 16° 43′26.9″N 98° 35′06.0″E; one shell (CUMZ 7124), 10 specimens (CUMZ 7125), Lam Kaen, Phang-Nga Province, 8° 35′48.5″N 98° 15′22.4″E; six specimens (CUMZ 7126), Koh Chang District, Trat Province, 12° 04′36.8″N 102° 22′02.6″E. MALAYSIA: 15 specimens (CUMZ 7127), Bukit Bunga, Kampung Jakar, Ayer Lanas, Kelantan, 5° 49′8.8″N 101° 54′40.4″E; one specimen (CUMZ 7128), Gunung Reng Batu Melintang, Jeli, Kelantan, 5° 42′54.1″N 101° 44′43.3″E; one shell (CUMZ 7132), 46 specimens (CUMZ 7129), Jalan Bunga, Merbok, Kedah, 5° 43′27.7″N 100° 23′22.3″E; one shell (Fig. 8C) (CUMZ 7130), 13 specimens (CUMZ 7131), Kampung Seberang Pekan, Baling, Kedah, 5° 41′13.4″N 100° 54′54.2″E. Description. Shell medium to large (Fig. 8B–D; shell height up to 13.0 mm; shell width up to 24.0 mm), dextral, spire depressed to low-conical, thin, translucent, and pale brown in colour. Shell surface nearly smooth with very thin growth lines. Embryonic shell surface smooth, with about 2½ whorls. Whorls 5–6, regularly increasing. Suture impressed. Spire depressed conic to low conical. Apex raised with a spire angle of about 134–142°. Last whorl large with wellrounded periphery. Aperture crescent shape, open obliquely with simple lip. Columellar margin slightly reflected near umbilicus. Umbilicus narrowly open and deep. Genital organs. Atrium (at) very short. Penis (p) short and cylindrical-shaped. Epiphallus (e) short, slightly smaller than penis diameter, about four times longer than penis. Epiphallic caecum (ec) somewhat enlarged, thick, almost same diameter as penis and coiled about two circles. Penial retractor muscle thin and long. Flagellum (fl) long, cylindrical-shaped, about same length as epiphallus. Vas deference (vd) a long tube between distal end of epiphallus and free oviduct (Fig. 9C). Inner wall of penis supported with very small and irregular penial pilasters (pp). Penial verge (pv) small, cylindrical and located at distal end of penis (Fig. 9D). Vagina (v) short about same length as penis and cylindricalshaped. Dart apparatus (da) very large, long and cylindrical, located at proximal end of vagina. Gametolytic sac (gs) bulbous; gametolytic duct (gd) long, cylindrical and slightly swollen near vagina. Free oviduct (fo) very short, triangular shape and entirely encircled with thick tissues. Oviduct (ov) large lobules; prostate gland (pg) runs alongside oviduct (Fig. 9C). Radula. Radula morphology very similar to M. aurantia new species. Each row contains about 111 teeth with formula (55- (17-16)-1-(15-16)-55). Central tooth symmetrical tricuspid; mesocone large with dull cusp. Lateral teeth asymmetrical tricuspid with very small endocone. Marginal teeth with elongate bicuspid start around tooth number 15 to 17 (Fig. 10G–I). External features. Animal with reticulated skin. Foot and body pale yellowish-grey, slightly darker on dorsal side. Head and tentacles darker grey. Caudal foss (cf) long and narrow, caudal horn (ch) raised, pale brownish colour. Mantle edge (shell lobes and dorsal lobes) well developed, dull brownish in colour (Fig. 2F). The snails secrete yellowish slime when disturbed. Remarks. This species was originally nominated as a subspecies of M. hardwickei Godwin-Austen, 1883 from Lower Bengal, Sylhet and Western Assam (Möllendorff, 1902a). It is here raised to full species level. It differs from M. hardwickei sensu stricto by its larger shell, the cylindrically shaped penis, and enlarged and short cylindrical appearance of the free oviduct versus a smaller shell, enlarged and triangular-shaped penis, and extremely long free oviduct of M. hardwickei (see Godwin-Austen, 1883: 105–107, pl. 23, figs, 1–4; pl. 28, fig. 1). Macrochlamys malaccana from Peninsular Malaysia has a relatively smaller shell that bears a distinct dark brown spiral line at the suture (see Foon et al., 2017). Unfortunately, genitalia data of M. malaccana is not available for comparison. Macrochlamys kelantanensis is usually ground dwelling and is often associated with anthropogenic habitats, such as plantations, fruit orchards, gardens or parks. This could explain their wide dispersal and it is believed to have been accidentally introduced through horticultural and agricultural trade activities., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak & Panha, Somsak, 2018, The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae), pp. 763-781 in Raffles Bulletin of Zoology 66 on pages 775-778, DOI: 10.5281/zenodo.5460634, {"references":["Mollendorff O von (1902 a) Binnenmollusken aus Hinterindien. 1. Land schnecken von Kelantan, Ostkuste der Halbinsel Malacca. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft, 34: 135 - 149.","Maassen WJM (2001) A preliminary checklist of the non-marine molluscs of West-Malaysia. \" A Handlist \". De Kreukel, Amsterdam, 155 pp.","Godwin-Austen HH (1883 - 1907) Land and Freshwater Mollusca of India, Including South Arabia, Baluchistan, Afghanistan, Kashmir, Nepal, Burmah, Pegu, Tenasserim, Malay Peninsula, Ceylon, and other Islands of the Indian Ocean. Taylor and Francis, London, Volume 1 (1883 - 1887): 67 - 206, pls. 13 - 62; Volume 2 (1898 - 1907): 47 - 238, pls. 70 - 117.","Foon JK, Clements GR & Liew T-S (2017) Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia. ZooKeys, 682: 1 - 94."]}
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- 2018
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27. Macrochlamys aurantia Pholyotha & Sutcharit & Panha 2018, new species
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Pholyotha, Arthit, Sutcharit, Chirasak, and Panha, Somsak
- Subjects
Stylommatophora ,Mollusca ,Macrochlamys aurantia ,Gastropoda ,Macrochlamys ,Animalia ,Biodiversity ,Ariophantidae ,Taxonomy - Abstract
Macrochlamys aurantia Pholyotha & Panha, new species (Figs. 2A, 3A, B, 4A–E, 6A–C) Material examined. Holotype (Fig. 3A; shell height 8.0 mm, shell width 14.0 mm, aperture height 6.0 mm, aperture width 7.2 mm, 5⅝ whorls) (CUMZ 7101), limestone outcrop at Wat Uthum Phon Wanaram (Temple), Huai Kayeng Village, Thong Pha Phum District, Kanchanaburi Province, Thailand, 14°41′52.6″N, 98°31′32.3″E. Paratypes: three shells (Fig. 3B; shell height 8.0 mm, shell width 13.9 mm, aperture height 6.5 mm, aperture width 7.1 mm, 5⅞ whorls) (CUMZ 7102), 12 specimens (CUMZ 7103), one shell (NHMUK), one shell (ZRC.MOL.13771), same data as holotype. Etymology. The specific name “ aurantia ” is from Latin “ aurantium ” meaning “orange”, and refers to the prominent orange or reddish orange posterior part of its body. Description. Shell medium-sized (Fig. 3A, B; shell height up to 8.2 mm; shell width up to 14.0 mm), dextral, comparatively depressed, thin but not fragile, semi-translucent, shiny and yellowish brown in colour. Shell surface smooth with fine growth lines. Embryonic shell small, about 2½ whorls with smooth surface. Whorls 5–6, regularly increasing. Suture wide and deeply channelled. Spire depressed, apex little raised, spire angle about 152–156°. Last whorl large, periphery rounded. Aperture oval-lunate, open obliquely, lip simple. Columellar edge slightly thickened and a little reflected over the narrowly open umbilicus. Genital organs. Atrium (at) short. Penis prolonged, slightly enlarged and cylindrical-shaped. Distally cylindrical and corresponding to penial verge. Penial caecum (pc) slightly prolonged. Epiphallus (e) slender tube, about two times length of penis. Epiphallic caecum (ec) coiled about one circle, located at middle of epiphallus and attached with thick penial retractor muscle (prm). Flagellum (fl) large, irregular coiled and length around half of epiphallus length. Vas deference (vd) slim tube connected between distal end of epiphallus and free oviduct (Fig. 4A). Internal wall of penis with very small and oblique wrinkled penial pilasters (pp). Penial verge (pv) small, thick and located at distal end of penis (Fig. 4B). Vagina (v) long, cylindrical-shape, about same length as penis. Dart apparatus (da) small, cylindrical-shape and situated at proximal end of vagina. Gametolytic sac (gs) prolonged and bulbous. Gametolytic duct (gd) long and cylindrical (two spermatophores in Fig. 4A). Free oviduct (fo) a long slender tube, proximal end encircled with thick brownish tissue. Oviduct (ov) large lobules, with prostate gland (pg) running alongside oviduct (Fig. 4A). Spermatophore long, needle-shape and translucent (Fig. 4C–E). Head filament (hf) short, gradually thinning to terminal point (Fig. 4D). Sperm sac (ss) a cylindrical capsule, containing sperm mass. Tail filament (tf) very long and cylindrical. Region close to sperm sac bearing three spines. First one dichotomous and split into two short spines, second one curved, located on same base as previous, third one simple, long and curved (Fig. 4D). Region furthest from sperm sac with small spine cluster near tip (Fig. 4E). Out of 10 specimens examined, seven contain one spermatophore and three contain two spermatophores in gametolytic organs. Radula. Teeth arranged in a U-shape, with about 103 teeth in each row with formula (48-(12-10)-1-(10-11)-54). Central tooth symmetrical, tricuspid with large and lanceolate mesocone, ectocones small and pointed cusps. Lateral teeth asymmetrical tricuspid. Endocone small, located near tip, mesocone large, triangular with pointed cusp. Ectocone larger than edocone and located near tooth base. Marginal teeth start around tooth number 10–12, obliquely bicuspid, elongate and narrower than others. Endocone large, ectocone smaller with pointed cusp (Fig. 6A–C). External features. Animal with reticulated skin. Head to eye stalks dark grey, body and tail deep yellow-orange. Caudal foss (cf) long and narrow. Caudal horn (ch) raised, large and greyish-orange. Mantle edge (shell lobes and dorsal lobes) well developed, dark to bright orange in colour. Shell lobes large and long. Right shell lobe (rsl) larger and longer than left shell lobe (lsl). Dorsal lobes large and broad. Right dorsal lobe (rdl) larger than both anterior left dorsal lobe (ant-ldl) and posterior left dorsal lobe (post-ldl). Snails secrete light orange slime when disturbed (Fig. 2A). Distribution and habitat. Macrochlamys aurantia new species was usually found on the surface of limestone walls and in rock crevices. Some individuals were encountered creeping on the leaves of a bush or tree trunk close to the limestone outcrop during our surveys. This species is probably locally endemic, and is currently known only from the type locality, where the population density is rather abundant. Remarks. Macrochlamys aurantia new species can be distinguished by the depressed spire, yellowish colour, large and rounded last whorl, and a wide and deep-channelled suture. The genitalia have long penis and vagina, one circle of coiled epiphallic caecum and a small dart apparatus located at the base of the vagina opposite the penis. Spermatophore has three spines at the proximal end and a cluster of small spines at the distal end of the tail filament. This new species can be distinguished from M. consepta (Benson, 1860) and M. chaos Blanford, 1905 from Myanmar by its depressed shell with a wide deeply impressed suture, and broad last whorl and aperture. In contrast, M. consepta has an almost flat shell with shallow suture, and the last whorl and aperture are not much broader. Macrochlamys chaos has a conoidly depressed shell with shallow suture, and narrow last whorl and aperture. In addition, this new species can be distinguished from all other known species by its spermatophore with three spines at the proximal end, and the cluster of small spines at the distal end of the tail filament., Published as part of Pholyotha, Arthit, Sutcharit, Chirasak & Panha, Somsak, 2018, The land snail genus Macrochlamys Gray, 1847 from Thailand, with descriptions of five new species (Pulmonata: Ariophantidae), pp. 763-781 in Raffles Bulletin of Zoology 66 on page 767, DOI: 10.5281/zenodo.5460634, {"references":["Benson WH (1860) Characters of new land-shells from Burmah and the Andamans. Annals and Magazine of Natural History, Series 3, Volume 6: 190 - 195.","Blanford WT (1905) Descriptions of Indian and Burmese land-shells referred to the genera Macrochlamys, Bensonia, Taphrospira, (gen. nov.), Microcystina, Euplecta, and Polita. Proceedings of the Zoological Society of London, 2: 441 - 447."]}
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- 2018
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28. Multigene phylogeny reveals the ribbed shell morphotypes in the land snail genus Sarika(Eupulmonata: Ariophantidae), with description of two new species from Thailand and Myanmar
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Pholyotha, Arthit, Sutcharit, Chirasak, Lin, Aung, and Panha, Somsak
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- 2022
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29. Integrative systematics reveals the new land-snail genus Taphrenalla (Eupulmonata: Ariophantidae) with a description of nine new species from Thailand.
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, Jeratthitikul, Ekgachai, and Panha, Somsak
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INSECT anatomy , *MORPHOLOGY , *CYTOCHROME oxidase , *MOLECULAR phylogeny , *SPECIES - Abstract
The endemic terrestrial Crown Snail from Southern Thailand formerly in Macrochlamys Gray, 1847 is now described as Taphrenalla Pholyotha & Panha gen. nov., based on comparative morphology and molecular data. Overall, eleven Taphrenalla species are now recognized, including two nominal species: T. asamurai and T. diadema. A total of nine new species are proposed: T. alba sp. nov., T. conformis sp. nov., T. corona sp. nov., T. dalli sp. nov., T. incilis sp. nov., T. macrosulcata sp. nov., T. parversa sp. nov., T. pygmaea sp. nov. and T. zemia sp. nov. The molecular phylogeny constructed from the mitochondrial cytochrome oxidase c subunit I (COI) and 16S rRNA gene fragments plus the nuclear 28S rDNA gene fragments revealed that Taphrenalla gen. nov. is monophyletic with a well-supported clade. The diagnostic characters of Taphrenalla gen. nov. are the shell sculpture with several radial grooves, body with well-developed colourful stripes running from the head to tail, and genitalia similar to Macrochamys but with an un-coiling epiphallic caecum. The spermatophore has one or two spines near the sperm sac and a spineless tail. [ABSTRACT FROM AUTHOR]
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- 2021
30. Annotated checklist of freshwater molluscs from the largest freshwater lake in Southeast Asia.
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Ting Hui Ng, Jeratthitikul, Ekgachai, Sutcharit, Chirasak, Chhuoy, Samol, Pin, Kakada, Pholyotha, Arthit, Siriwut, Warut, Srisonchai, Ruttapon, Hogan, Zeb S., and Peng Bun Ngor
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LAKES ,MOLLUSKS ,GASTROPODA ,AQUATIC animals ,FRESHWATER biodiversity ,FRESH water - Abstract
The Tonle Sap Lake in Cambodia is a crucial freshwater biodiversity hotspot and supports one of the world's largest inland fisheries. Within the Tonle Sap basin, freshwater molluscs provide vital ecosystem services and are among the fauna targetted for commercial harvesting. Despite their importance, freshwater molluscs of the Tonle Sap basin remain poorly studied. The historical literature was reviewed and at least 153 species of freshwater molluscs have been previously recorded from throughout Cambodia, including 33 from the Tonle Sap basin. Surveys of the Tonle Sap Lake and surrounding watershed were also conducted and found 31 species, 15 bivalves (five families) and 16 gastropods (eight families), in the Tonle Sap basin, including three new records for Cambodia (Scaphula minuta, Novaculina siamensis, Wattebledia siamensis), the presence of globally invasive Pomacea maculata and potential pest species like Limnoperna fortunei. This study represents the most comprehensive documentation of freshwater molluscs of the Tonle Sap basin, and voucher specimens deposited at the Inland Fisheries Research and Development Institute, Cambodia, represent the first known reference collection of freshwater molluscs in the country. In order to combat the combined anthropogenic pressures, including invasive species, climate change and dams along the Mekong River, a multi-pronged approach is urgently required to study the biodiversity, ecology, ecosystem functioning of freshwater molluscs and other aquatic fauna in the Tonle Sap basin. [ABSTRACT FROM AUTHOR]
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- 2020
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31. Integrative systematics reveals the new land-snail genus Taphrenalla(Eupulmonata: Ariophantidae) with a description of nine new species from Thailand
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Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros, Jeratthitikul, Ekgachai, and Panha, Somsak
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- 2021
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32. Contributions of a small collection of terrestrial microsnails (Pupilloidea, Hypselostomatidae) from Myanmar with description of three new species.
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Tongkerd P, Lwin N, Páll-Gergely B, Chanabun R, Pholyotha A, Prasankok P, Seesamut T, Siriwut W, Srisonchai R, Sutcharit C, and Panha S
- Abstract
Land snails were collected for the project 'Conserving Myanmar's Karst Biodiversity' from the limestone karsts in Mon, Kayin, and Shan states and in the regions of Tanintharyi and Mandalay between 2015 and 2017, through cooperation with Fauna and Flora International (FFI) and the Forestry Department of Myanmar. Here, we report on a portion of the collection, and list 17 species from seven genera of the Hypselostomatidae microsnails. Three new species from two genera are described as Bensonellataiyaiorum Tongkerd & Panha, sp. nov. , B.lophiodera Tongkerd & Panha, sp. nov. , and Gyliotrachelaaunglini Tongkerd & Panha, sp. nov. All new species are known only from the type locality in Shan State ( Bensonella ) and Kayin State ( Gyliotrachela ). A new combination of Acinolaemusdayanum and three newly recorded species, namely A.cryptidentatus , B.anguloobtusa and G.hungerfordiana are discussed. The low morphological variability of the widely distributed G.hungerfordiana is discussed, and two species are proposed for formal synonymisation. Constituting the first records for Myanmar, five species of Bensonella and two species of Acinolaemus were collected., Competing Interests: The authors have declared that no competing interests exist., (Piyoros Tongkerd, Ngwe Lwin, Barna Páll-Gergely, Ratmanee Chanabun, Arthit Pholyotha, Pongpun Prasankok, Teerapong Seesamut, Warut Siriwut, Ruttapon Srisonchai, Chirasak Sutcharit, Somsak Panha.)
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- 2024
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