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A list of 34 thomisid species belonging to 21 genera collected in Jangxi Province of China is provided. Five new species are described: Angaeus xieluae Liu, sp. nov. (♂♀), Lysiteles subspirellus Liu, sp. nov. (♀), Oxytate mucunica Liu, sp. nov. (♀), Pharta lingxiufengica Liu, sp. nov. (♀), Stephanopis xiangzhouica Liu, sp. nov. (♀). A new combination is proposed: Ebelingia forcipata (Song & Zhu, 1993) comb. nov. (ex. Ebrechtella Dahl, 1907). Previously unknown females of E. forcipata (Song & Zhu, 1993), Oxytate bicornis Liu, Liu & Xu, 2017, and Xysticus lesserti Schenkel, 1963 are described for the first time. Stephanopis O Pickard-Cambridge, 1869, a genus previously known from Australasia and South America, is recorded from the Asian mainland for the first time.

Collections of thomisid spiders by amateur and professional arachnologists in China have led to the discovery of some interesting crab spiders (Thomisidae). Two new species in two genera of thomisid spiders are described and illustrated with photographs and SEMs: Pharta xizang Liu & Yao, sp. nov. (♀) and Stephanopis qiong Liu & Yao, sp. nov. (♀). The previously unknown males of Borboropactus longidens Tang & Li, 2010 and Stephanopis xiangzhouica Liu, 2022 were also collected and are described for the first time. The genus Borboropactus Simon, 1884 is reported for the first time from Vietnam. The new Stephanopis species is also recorded for only the second time from the Asian mainland. Distributions of all these species are mapped.

Biema wanglangensis Huo & Zhao gen. et sp. nov. urn:lsid:zoobank.org:act: E468D3B0-C9CC-41E7-A092-61F4E55BBF08 Figs 2–23 Diagnosis Mesonotum sparsely light yellow pollinose, only thickened on lateral sides before transverse suture; pleuron and scutellum sparsely pollinose; male tergite 4 with dark brown or yellow broad median fascia; female tergites 3 and 4 with yellow fasciae, not extended to the anterior margin; female tergites 5 to 7 with yellow maculae basolaterally. Etymology The specific name is derived from the locality where type specimens were collected. Material examined Holotype CHINA • ♂; Sichuan Province, Pingwu County, Wanglang Natural Reserve; 4 Aug. 2016; Ke-Ke Huo leg.; sub-alpine forest; specimen identifier: SYR-2016080001; SNUT. Paratypes CHINA • 6 ♂♂, 1 ♀; same collection data as for holotype; specimen identifiers: SYR-2016080002 to 2016080008; SNUT • 4 ♂♂, 3 ♀♀; same collection data as for holotype; Fei Lan Leg.; specimen identifiers: SYR-2016080009 to 2016080015; SNUT • 1 ♂, 1 ♀; same collection data as for holotype; 5 Aug. 2016; specimen identifiers: SYR-2016080016 to 2016080017; SNUT • 1 ♂; same collection data as for holotype; 5 Aug. 2016; Fei Lan Leg.; specimen identifier: SYR-2016080018; Genbank: ON067497; SNUT • 11 ♂♂; same collection data as for holotype; 6Aug. 2016; specimen identifiers: SYR-2016080019 to 2016080029; SNUT • 1 ♂; same collection data as for holotype; 5 Aug. 2017; specimen identifier: SYR-2016080030; SNUT • 1 ♂, 2 ♀♀; same collection data as for holotype; 6 Aug. 2017; Yan Bai leg.; specimen identifiers: SYR-2016080031 to 2016080033; ZFMK • 1 ♀; same collection data as for holotype; 6 Aug. 2017; Yan Bai leg.; specimen identifier: ZFMK-DIP-00097116; photographed in Figs 5–7; SNUT • 17 ♂♂; same collection data as for holotype; 9 Aug. 2017; specimen identifiers: SYR-2016080034 to 2016080050; ZFMK • 1 ♂; same collection data as for holotype; 9 Aug. 2017; specimen identifier: ZFMK-DIP-00097117; photographed in Figs 2–4; SNUT • 7 ♂♂; same collection data as for holotype; 9 Aug. 2017; Yan Bai leg.; specimen identifiers: SYR-2016080051 to 2016080057; SNUT • 3 ♂♂, 2 ♀♀; same collection data as for holotype; 10 Aug. 2017; specimen identifiers: SYR-2016080058 to 2016080062; ZFMK • 1 ♂, 1 ♀; same collection data as for holotype; 10 Aug. 2017; specimen identifiers: ZFMK-DIP-00097118 and ZFMK-DIP-00097119; SNUT • 1 ♀; same collection data as for holotype; 10 Aug. 2017; Yan Bai leg.; specimen identifiers: SYR-2016080065; SNUT. Description Male (Figs 2–4, 8–9, 11–12, 14–23) MEASUREMENTS. Body length: 5 mm. Wing length: 5mm. HEAD (Figs 2–4, 8–9, 11). Hemispherical, deeply concave posteriorly with a concealed postpronotum. Eye bare, with eye contiguity longer than frons. Vertex slightly convex, black, yellow pilose and pollinose. Ocellar triangle equilateral, located at the anterior half of vertex. Occiput densely yellow pilose and pollinose on dorsal and upper half of lateral portions, yellowish white pilose and pollinose on lower half, obscures ground colour. Frons densely white pollinose obscures ground colour, short light pile along the margins. Lunule narrow, light yellowish brown. Face almost vertical in lateral view, facial tubercle rounded and produced, anterior margin of oral open not pointed. Face black and densely white to light yellow pollinose obscures ground colour, facial tubercle and lateral oral margins shiny black and bare. Face short light pilose laterally. Gena densely light yellowish white pilose and pollinose. Antennal sockets confluent. Antenna light yellow; basoflagellomere dark brown dorsally; arista dark brown with extremely short pile, thickened basally. THORAX (Figs 2–3). Black. Mesonotum metallic golden green, with subappressed short yellow pile; sparsely light yellow pollinose, thickened on lateral sides before transverse suture. Postpronotum light yellow pollinose. Scutellum shining black, metallic green, with subappressed short yellow pile, row of light yellow bristle-like pile on posterior margin and two pile elongated in middle. Subscutellar fringe short and sparse, absent medially. Pleuron shining black, light yellow pollinose. Posterior convex part of anepisternum and anterior anepimeron sparsely short yellow pilose. Katepisterum sparsely short yellow pilose, only with ventral pile patches. Metasternum not reduced, posterior margin shallowly concave similar to that in Platycheirus, yellow, bare. LEGS (Figs 2–4). Light yellow to yellowish white; two apical tarsomeres of mid-tarsi light brown; hindtibiae, hind-tarsi and apical ½ of hind-femora black to blackish brown, hind-knees and apical of hindtibiae light yellow. Legs yellow pilose, apcial three tarsomeres of tarsi dorsally black pilose. WING (Figs 2–3, 14). Transparent, stigma light yellow, membrane entirely microtrichose. Vein R 4+5 straight, spurious vein rudimentary, corssvein r-m slightly inclined, located before the basal ⅓ of cell dm. Vein M 1 bent basally and formed s-shaped slightly. Vein M 1 and vein dm-cu parallel with wing margin. Alula narrow, as wide as basal width of cell c. Calypters narrow, yellowish white. Halters yellowish white, except yellowish green apically. ABDOMEN (Figs 2–3, 12). Male abdomen parallel-sided, slightly constricted at tergite 2 posterior margin, broadened from tergite 3 and widest part at end of tergite 4, postabdomen conspicuous more swollen than other segments. Tergite 2 slightly longer than tergite 3, and tergite 3 slightly longer than tergite 4. Abdomen blackish brown, yellowish white to yellow laterally; tergite 2 with two triangular yellow markings merged into yellow lateral margin and broadly separated on inner end; tergite 3 with broad median yellow fascia, sometime interrupted medially; tergite 4 with dark broad median brown fascia, sometimes absent.Terminalia yellowish brown.Tergites with light yellow pile on lateral margin, appressed black pile medially. Sternites light pilose; sternites 1 and 2 yellowish white, 3 and 4 brownish yellow. MALE TERMINALIA (Figs 15–23). Dark brown. Cercus small, weakly sclerotized, with yellow pile. Epandrium nearly quadrilateral in lateral view, broad slightly longer than high, basal margin broader than apical margin. Surstylus triangular in dorsal view, broadened basally, then gradually narrowed ventrad, with apex acute, and bent posterodorsally; in posterior view expanded into broad triangle towards middle line along posterior margin of epandrium, with pile on inner margin. Hypandrium circular and expanded basally, with transparent circular membrane area on postmedial portion ventrally, without lingula. Postgonite divided into dorsal and ventral branches, dorsal branch broadly striped, transparent on margins, with circular apex, bent posteroventrally in middle right angled. Ventral branch narrowly striped, expanded posteroventrally. Phallus unsegmented, with 2 ridges dorsally, apical end of ridges pointed. Female (Figs 5–7, 10, 13) MEASUREMENTS. Body length: 5 mm. Wing length: 5 mm. HEAD (Figs 5–7, 10). Vertex and frons densely gray yellow pollinose and yellow pilose, with blackish brown spot in front of lunule. Antenna dark brown. LEGS. Tarsi with black pile dorsally. ABDOMEN (Figs 5–6, 13). Abdomen parallel-sided, blackish brown, yellow laterally. Tergite 1 yellow or dark brown. Tergite 2 with lateral yellow markings medially, separated at inner ends and merged into lateral yellow. Tergites 3 and 4 with broad anterior yellow fasciae, with its anterior and posterior margins projecting medially. Tergites 5 to 7 yellow laterally. Sternites yellowish white, with light pile. Female terminalia brownish yellow. Remainder similar to male. Immature stages Unknown. Distribution This species was collected from sub-alpine forest at Wanglang National Nature Reserve, Pingwu County, Sichuan Province, China (103º55′− 104º10′ E, 32º49′− 33º02′ N, 2300−4980 m a.s.l.) during 2016–2018 (Fig. 24)., Published as part of Huo, Ke-Ke, Zhao, Le, Mengual, Ximo, Li, Gang, Liu, Xin, Zhao, Lian-Jun & Chen, Zhen-Ning, 2022, Biema Huo & Zhao gen. nov., a new flower fly genus (Diptera, Syrphidae) from China, pp. 98-116 in European Journal of Taxonomy 852 on pages 102-106, DOI: 10.5852/ejt.2022.852.2015, http://zenodo.org/record/7471148

Biema qilianensis Huo & Liu gen. et sp. nov. urn:lsid:zoobank.org:act: D9DFD1A0-68B8-42E9-A50C-72F48AB60CC4 Figs 25–41 Diagnosis Mesonotum densely pollinose, anterior area with one pair of inconspicuous submedial pollinose vittae extended posteriad of transverse suture; scutellum densely pollinose; male tergite 4 without macula or with a small yellow macula/fascia anteromedially; female tergites 2 to 7 with broad yellow fasciae, extended to the anterior margin of tergites. Etymology The specific name is derived from the locality where the type specimens were collected. Material examined Holotype CHINA • ♂; Qinghai Province, Menyuan County, Zhugu village, Sigou township; 24 Jul. 2021; Ke-Ke Huo leg.; sub-alpine forest; specimen identifier: SYR-2021070001; SNUT. Paratypes CHINA • 1 ♂; same collection data as for holotype; Xin Liu leg.; Genbank: ON067496; specimen identifier: SYR-2021070002; SNUT • 6 ♂♂; same collection data as for holotype; 28 Jul. 2021; Xin Liu leg.; specimen identifiers: SYR-2021070003 to 2021070008; SNUT • 1 ♂; Qinghai Province, Menyuan County, Xianmi village, Qihankai Nature reserve; 30 Jul. 2021; Xin Liu leg.; specimen identifiers SYR-2021070009; SNUT • 1 ♀; Qinghai Province, Menyuan County, Xianmi village, Meihua township; 30 Jul. 2021; Xin Liu leg.; specimen identifiers: SYR-2021070010. Description Male (Figs 25, 27–29, 31–41) MEASUREMENTS. Body length: 5 mm. Wing length: 5 mm. HEAD (Figs 25, 27–28). Hemispherical, deeply concave posteriorly with concealed postpronotum. Eye bare, with eye contiguity longer than frons. Vertex slightly convex, black, yellow pilose and pollinose. Ocellar triangle equilateral,located at anterior half of vertex. Occiput densely yellow pilose and pollinose on dorsal and upper half of lateral portions, yellowish white pilose and pollinose on lower half of lateral portions, obscures ground colour. Frons densely white pollinose obscures ground colour, short light pile along eye margins. Lunule narrow, light yellowish brown. Face almost vertical in lateral view, facial tubercle rounded and produced, anterior margin of oral open not pointed. Face black, densely white to light yellow pollinose obscures ground colour, facial tubercle and lateral oral margins shining black and bare. Face short light pilose laterally. Gena densely light yellowish white pilose and pollinose. Antennal sockets confluent. Antenna light yellow; basoflagellomere dark brown dorsally; arista dark brown with extremely short pile, thickened basally. THORAX. Black. Mesonotum metallic golden green, subappressed short yellow pilose, light yellow pollinose and thickened laterally, anterior area with one pair of inconspicuous submedial pollinose vittae extended posteriad of transverse suture. Postpronotum light yellow pollinose. Scutellum shining black, metallic golden green, subappressed short yellow pilose, row of light yellow bristle-like pile on posterior margin and two pile elongated in middle. Subscutellar fringe short and sparse, central area of posterior margin bare. Pleuron shining black, light yellow pollinose. Posterior convex part of anepisternum and anterior anepimeron sparsely short yellow pilose. Katepisterum sparsely short yellow pilose, only with ventral pile patches. Metasternum not reduced, with posterior margin shallowly concave similar to that in Platycheirus, yellow, bare. LEGS. Light yellow to yellowish white; two apical tarsomeres of mid-tarsi light brown; hind-tibiae, hindtarsi and apical ½ to ⅔ of hind-femora black to blackish brown, hind-knees and apical of hind-tibiae light yellow. Yellow pilose. WING (Fig. 31). Transparent, stigma light yellow, membrane entirely microtrichose. Vein R 4+5 straight, spurious vein rudimentary, corssvein r-m slightly inclined, located before basal ⅓ of cell dm. Vein M 1 bent basally and formed s-shaped slightly, Vein M 1 and vein dm-cu parallel with wing margin. Alula narrow, as wide as basal width of cell c. Calypters narrow, yellowish white. Halters yellowish white, except yellowish green apically. ABDOMEN (Fig. 29). Male abdomen parallel-sided, slightly constricted at tergite 2 posterior margin, broadened from tergite 3 and the widest part at the end of tergite 4, postabdomen conspicuous more swollen than other segments. Tergite 2 slightly longer than tergite 3, and tergite 3 slightly longer than tergite 4. Abdomen blackish brown, yellowish white to yellow laterally; tergite 2 with two triangular yellow markings merged into yellow lateral margin and broadly separated on inner end; tergite 3 with yellow broad median fascia, sometime interrupted medially; tergite 4 without macula, sometime with median small yellow macula or fascia anteriorly. Terminalia yellowish brown. Tergites with light yellow pile on lateral margin and appressed black pile medially. Sternites light pilose; sternites 1 and 2 yellowish white, 3 and 4 brownish yellow. MALE TERMINALIA (Figs 32–41). Yellowish brown. Cercus small, weakly sclerotized, yellowish brown with yellow pile. Epandrium nearly quadrilateral in lateral view, slightly longer than high, with the dorsal margin slightly convex. Surstylus elongated, slightly expanded inwards basodorsally, narrowly stripelike in lateral view, dorsal and ventral margins at basal ⅔ nearly parallel, apical ⅓ bent posterodorsally, ventral margin with circularly concave, apical with two triangular dentate-shaped point, inner surface with short brown setae. Hypandrium rounded and enlarged, with short brown setae posteroventrally and concave posteromedial margin. Postgonite bluntly basodorsally with a prominent tooth in lateral view, posterior part divided into dorsal and ventral branches, dorsal branch blunt and broad apically, ventral branch slightly sharp apically with dentate-shaped towards midline. Phallus unsegmented, in lateral view bluntly rounded apically, in dorsal view enlarged medially, arc-shaped laterally, two dentateshaped apically, arc-shaped between dentate-shape. Female (Figs 26, 30) MEASUREMENTS. Body length: 5 mm. Wing length: 5 mm. HEAD (Fig. 26). Vertex and frons densely gray yellow pollinose and yellow pilose, with a blackish brown spot in the front of lunule. Antenna dark brown. LEGS. Tarsi with black pile dorsally. ABDOMEN (Fig. 30). Abdomen parallel-sided, blackish brown, yellowish laterally. Tergite 1 yellow or dark brown. Tergite 2 with lateral yellow spots medially, separated at the inner ends and merged into lateral yellow. Tergites 3 to 7 with broad yellow fasciae, anterior border of fasciae contacts anterior margin of tergites, covering about ⅔ of tergites 3 and 4, about ½ of tergites 5 to 7. Sternites yellow with light pile. Remainder similar to male. Immature stages Unknown. Distribution This species was obtained from sub-alpine forest at Qilian Mountain National Park, Qinghai Province, China (102º24′ E, 37º7′ N, 2600–3248 m above sea level) (Fig. 42).

Huo, Ke-Ke, Zhao, Le, Mengual, Ximo, Li, Gang, Liu, Xin, Zhao, Lian-Jun, Chen, Zhen-Ning (2022): Biema Huo & Zhao gen. nov., a new flower fly genus (Diptera, Syrphidae) from China. European Journal of Taxonomy 852: 98-116, DOI: https://doi.org/10.5852/ejt.2022.852.2015, URL: http://dx.doi.org/10.5852/ejt.2022.852.2015

Genus Biema Huo & Zhao gen. nov. urn:lsid:zoobank.org:act: A0AF4F68-7FD0-454A-B850-61565DD303DC Type species Biema wanglangensis Huo & Zhao gen. et sp. nov. Diagnosis Biema gen. nov. can be distinguished by the following morphological features: head deeply concave posteriorly with a concealed postpronotum; postpronotum without pile; head, mesonotum and scutellum black; metasternum not reduced, with posterior margin shallowly concave similar to that in Platycheirus Le Peletier & Serville, 1828; alula narrow, as wide as basal width of cell c; male postabdomen conspicuous more swollen than other segments, surstylus and postgonite complex, phallus unsegmented. In the identification key to bacchine and melanostomine groups by Thompson & Skevington (2014), the new genus keys out to couplet 2. Further, males of Biema key out to Baccha Fabricius, 1805 based on its short pilose antennal arista, unmodified hind tibia, distinct facial tubercle and bare metathoracic pleuron. Our new genus can be easily distinguished from Baccha by the incomplete postmetacoxal bridge (complete postmetacoxal bridge in Baccha) and by the sparse but present scutellar fringe (absent in Baccha). Females of Biema, with a parallel-sided abdomen, key out to couplet 11 and are morphologically related to Platycheirus, Argentinomyia Lynch-Arribálzaga, 1891 and Melanostoma. Etymology The new genus is named after the Biema Zang people, who live where the type specimens were collected. Description Small sized flies. Head hemispherical. Eye bare. Vertex, frons and face black, densely white pollinose obscures ground colour. Facial tubercle rounded and produced, bare and shinning. Arista extremely short pilose. Antennal sockets confluent. Scutellum black, row of short bristles on posterior margin and one pair of bristles elongated in the middle. Katepisternum only with ventral patches. Metasternum not reduced, posterior margin shallowly concave similar to that in Platycheirus. Legs slender, not modified, hide-coxa without tuft of pile on anteromedial corner. Wing membrane entirely microtrichose. Vein R 4+5 straight; spurious vein rudimentary; crossvein r-m slightly inclined, located before basal ⅓ of cell dm; alula narrow, as wide as width of cell c. Male abdomen nearly parallel-sided, slightly constricted at tergite 2 posterior margin, broadened from tergite 3 and widest part at end of tergite 4, postabdomen conspicuous more swollen than other segments. Tergite 2 slightly longer than tergite 3, and tergite 3 slightly longer than tergite 4. Abdomen blackish brown with yellow maculae or fasciae. Male surstylus and postgonite complex, phallus unsegmented. Biology and distribution Biema gen. nov. occurs in forest areas, at or above 2300 m altitude in China (Sichuan, Qinghai) (Fig. 1).

The genus Psilota Meigen, 1822 is recorded for the first time from China, and the species Psilota bashanensis Huo and Zhao sp. nov. is described and illustrated based on the adult male. The complete cytochrome c oxidase subunit I (COI) gene of this new species has been successfully obtained and compared to that of other congeneric species. An updated key to adult males of the genus Psilota from the Palaearctic Region is also provided.

Psilota bashanensis Huo and Zhao sp. nov. ZooBank link: http://zoobank.org/9054da35-d537-458d-8607-21a5a92137e4 BOLD link: dx.doi.org/10.5883/BOLD:AEK3637 Figs 1–16 Type material. HOLOTYPE: ♂, CHINA: Dabashan Mountains, Shaanxi Province, 107°23’E, 32°84′N, 23-III- 2021, collected by Le Zhao (depository: Museum of Zoology and Botany, Shaanxi University of Technology, China). PARATYPE: 1 ♂ same data as holotype. Diagnosis. Psilota bashanensis sp. nov. belongs to the P. innupta species-group sensu Smit & Vujić (2008). It is easily recognized by the faintly brown-tinted wing with a yellow stigma, the elongated basoflagellomere (1.8 times longer than wide), and the shiny pleura. Additional characters are black species with face heavily whitish microtrichose, eyes densely covered with long yellowish white pile, antennae inserted in upper half of the face in lateral view. Pleura shining and partly long light yellowish-brown pilose. Metafemur not swollen, carinate on posterior margin apicoventrally. Epandrium in lateral view almost 1.12 times wider than long. Surstylus about 1.19 times as long as length of the base of the epandrium, inner lobe lanceolate, gradually broadened towards the top; outer lobe shorter than inner lobe, curved, broader, and rectangular basally. Body length: Males, 7.0– 7.1mm (n=2). wing length: 5.5–5.6mm (n=2). Description. MALE: Head (Figs 1–4, 6–8). Head black, face densely covered with whitish microtrichia (Figs 2, 4). Face slightly inclined towards posterior in lateral view, about 2.4 times longer than frons and gradually broadened laterally downwards in frontal view, covered with yellowish white long pile laterally; frons small, mostly covered with long yellowish white pile and mixed with a few long black pile laterad to frontal prominence; gena long yellowish white pilose (Figs 2, 4, 6–7). Eyes holoptic, contiguity about 1.2 times the length of the frons, with dense long yellowish white pile (Figs 1, 6–7). Ocellar triangle equilateral. Ocellar triangle equilateral. Occiput black, covered with whitish pollinosity, light yellow short pile dorsally and a few long pile posterior to the ocellar triangle medially, a row of long black pile along with the posterior margin of eyes, and yellow to yellowish white pile laterally below. Occiput in lateral view narrowed dorsally and gradually broadened laterally. Vertex black, with a tuft of long yellowish white and black pile. Antenna black, black pilose on dorsal and ventral margins of scape and pedicel, basoflagellomere 1.8 times as long as wide, arista black and bare (Figs 4, 8). Thorax (Figs 1, 3–4). Postpronotum black with long light yellowish-brown pile. Mesonotum longer than wide, slightly convex dorsally, shiny black, bronze metallic reflection with fine punctuation and long light yellowish-brown pile, sparse black pile posterior to transverse suture. Scutellum (Figs 1, 9) about twice as wide as long, with fine punctuation and apical marginal rim, shiny black, mixed long black and light yellowish-brown pile. Subscutellar fringe composed of long light yellowish-brown pile. Pleura shiny black with long light yellowish-brown pile on propleuron, anepisternum, posterior anepimeron and posterior katepisternum. Katepisternum without dorsal and ventral pile patches. Meron with a tuft of light yellowish-brown pile anteroventral to posterior spiracle. Metasternum black with long yellowish white pile. Postmetacoxal bridge absent. Legs (Figs 1, 3, 13). Legs black, blackish brown on the extreme apex of femora and the base of tibiae of pro- and mesolegs. Tarsi black, basal two tarsomeres slightly brownish. Proleg yellow pilose, except for the apical half of the profemur, posteriorly, bearing long black pile, and the protibial bearing mixed long black and light yellowish-brown pile posteriorly. The pile of mesolegs similar to that on the forlegs, except mesofemur with long yellowish-brown pile posteriorly and sparsely long black pile anteriorly, mesotibia with long black pile in posterior part. Metacoxa covered with long yellowish white pile. Metafemur covered with light yellow pile, longer in anterior part and apical part posterodorsally, a few short black spines apicoventrally. Metatibia covered with mixed long black and light-yellow pile, anterior margin of the basitarsus with long dark pile. Metafemur not swollen, distinctly ridged apically on the posteroventral margin. Wings (Figs 1, 3, 5, 15). Spurious vein absent, faintly brown-tinted, stigma yellow, covered with microtrichia except base of cells c and bm, anterior and posterior margin of cell bm, and anterior portion of cell cup. Vein R 2+3 straight, vein r-m at basal 1/4 of cell dm. The middle of the vein M 1 bulged outwards circularly without external spurs, joined with vein R 4+5 at acute angle. Vein dm-cu recessive anteriorly, forming a right angle with vein M (Fig 15). Dorsal calypter light brown. Ventral calypter light grey-black, large and rounded. Plumula long, yellowish brown. Abdomen (Figs 1, 3, 9). Oval, black, abdominal segments 2, 3, and 4 nearly equal in length, abdominal tergites with fine punctuation and erect long light yellowish brown pile. Genitalia (Figs 10–12, 14, 16). Epandrium shiny black and strongly sclerotized. Epandrium in lateral view almost 1.12 times wider than long (Fig 11). In dorsal view, the middle of the posterior epandrium margin inwards formed a triangular depression (Fig 12). Cercus elongate, petiolate, broad and rounded on apical half, finer on basal half, dark tawny with long light yellowish pile (Figs 11–12). Surstyli, inner lobe at most 1.19 times the length of the epandrium, lanceolate, gradually broadened towards the top; outer lobe shorter than inner lobe, curved, broader and quadrangle basally, light to long dark pile on basal half (Figs 10–12). Hypandrium shiny black and strongly sclerotized, elongated, tubular, broader basally and finer apically (Fig 14). Superior lobe as a narrow band, broad and rounded at apex. Aedeagus (Figs 14, 16) unsegmented, dorsal margin arcuated and formed an acute angle with ventral margin; ventral margin denticulate apically and joining basal margin approximately at right angle; aedeagal apodeme elongated triangles. FEMALE. Unknown. Etymology. The specific epithet refers to the type locality. Distribution. Known only from Dabashan Mountains, Shaanxi Province, China. Biology. Adults were collected in open areas of the Dabashan Mountains (107°23′E, 32°84′N, 600–680m asl) in 2021 (Fig.17). They were visiting flowers of Microdesmis caseariifolia., Published as part of Zhao, Le, Liu, Xin, Smit, John T., Li, Gang, Liu, Han-Yue, Dang, Li-Hong & Huo, Ke-Ke, 2022, A new species of the genus Psilota Meigen, 1822 (Diptera: Syrphidae) from China, pp. 225-238 in Zootaxa 5154 (2) on pages 228-230, DOI: 10.11646/zootaxa.5154.2.7, http://zenodo.org/record/6641448, {"references":["Smit, J. T. & Vujic, A. (2008) The Palaearctic species of the genus Psilota Meigen (Diptera, Syrphidae) with the description of two new species. Studia dipterologica, 14, 345 - 364."]}

Key to the males of Psilota from the Palaearctic Region This key is mainly based on Smit & Vujić (2008) and Radenković et al. (2020). 1 Face at most only slightly microtrichose, clearly shiny face below the antenna. Thorax and abdomen (bluish) black colored.................................................................................. 2 ( P. atra species-group) - Face heavily microtrichose, clearly dull beneath antennae. Thorax and abdomen more bronze-colored................................................................................................ 7 ( P. innupta species-group) 2 Epandrium in lateral view longer than broad............................................................... 3 - Epandrium in lateral view as long as broad, or broader than long............................................... 5 3 Metafemur not swollen and with a shallow groove apicoventrally, formed by two rows of mixed short and long black pines. Basoflagellomere about 2 times longer than broad. Epandrium in lateral view 1.2 times longer than broad (see figure 11A in Radenković et al., 2020)..................................................................... Psilota aegeae - Metafemur swollen................................................................................... 4 4 Metafemur slightly swollen, without a spinose ridge. Epandrium in lateral view almost 1.5 times longer than wide (see figure 13 in Smit & Vujić, 2008).................................................................. Psilota kroshka - Metafemur clearly swollen and with spinose ridge apicoventrally. Epandrium in lateral view almost 2 twice longer than wide (see figures 11B, D in Radenković et al., 2020)..................................................... Psilota atra 5 Epandrium about as long as wide in lateral view (see figure 15 in Smit & Vujić, 2008). Face only 1.7 times longer than frons. Basoflagellomere only little longer than wide, face and frons predominantly light haired, some black ones beside and just above the antenna................................................................................. Psilota nana - Epandrium broader than long in lateral view................................................................ 6 6 Surstylus very long and slender. Inner lobe about twice as long as the maximum length of the epandrium. Outer lobe extremely narrow, often not curved but folded backwards (see figure 8 in Smit & Vujić, 2008)................... Psilota exilistyla - Surstylus less long and slender. Inner lobe at most 1.5 times as long as the maximum length of the epandrium, outer lobe wider, curved down at the end, rarely a little backwards (see figure 4 in Smit & Vujić, 2008)................ Psilota anthracina 7 Wing, though faint, clearly infuscate in the middle. Metafemur not swollen but with a spinose ridge apicoventrally........ 8 - Wing entirely hyaline without a faint cloud. Metafemur not swollen and without a spinose ridge; pleura entirely shining. Outer lobe bent or curved downwards at the middle (see figures 9–12 in Smit & Vujić, 2008).................. Psilota innupta 8 Epandrium in lateral view almost 1.4 times longer than wider (see figure 17 in Smit & Vujić, 2008). Pleura lightly dusted. Basoflagellomere more than 2.5 times as long as wide.......................................... Psilota nigripilosa - Epandrium in lateral view as long as broad, or broader than long.............................................… 9 9 Epandrium in lateral view almost 1.12 times wider than long (fig. 11). Pleura entirely shining. Basoflagellomere approximately 1.8 times as long as wide...................................................... … Psilota bashanensis sp. nov. - Epandrium in lateral view as long as wide (see figure 6 in Smit & Vujić, 2008). Pleura slightly dusted. Basoflagellomere approximately 1.5 times as long as wide....................................................... Psilota brevicornis, Published as part of Zhao, Le, Liu, Xin, Smit, John T., Li, Gang, Liu, Han-Yue, Dang, Li-Hong & Huo, Ke-Ke, 2022, A new species of the genus Psilota Meigen, 1822 (Diptera: Syrphidae) from China, pp. 225-238 in Zootaxa 5154 (2) on pages 232-233, DOI: 10.11646/zootaxa.5154.2.7, http://zenodo.org/record/6641448, {"references":["Smit, J. T. & Vujic, A. (2008) The Palaearctic species of the genus Psilota Meigen (Diptera, Syrphidae) with the description of two new species. Studia dipterologica, 14, 345 - 364.","Radenkovic, S., Likov, L., Stahls, G., Rojo, S., Perez-Banon, C., Smit, J., Petanidou, T., Steenis, W. V. A. N. & Vujic, A. (2020) Three new hoverfly species from Greece (Diptera: Syrphidae). Zootaxa, 4830 (1), 103 - 124. https: // doi. org / 10.11646 / zootaxa. 4830.1.4"]}

Four new species are described from Jinggang Mountain National Nature Reserve, Jiangxi Province of southern China: Draconarius lingdangsp. nov. (♂♀), D. substrophadatussp. nov. (♀), Orumcekia cipingensissp. nov. (♀) and Tonsilla shuikouensissp. nov. (♀). Additionally, Coelotes septus Wang, Yin, Peng & Xie, 1990 is redescribed and its male is described for the first time.

Eight new Otacilia species were collected from Ji’an City, Jiangxi Province, China during a survey of the phrurolithid fauna of the region: Otacilia bizhouica Liu, sp. nov. (♂♀), O. gougunao Liu, sp. nov. (♂), O. nanhuashanica Liu, sp. nov. (♂♀), O. subfabiformis Liu, sp. nov. (♂♀), O. wugongshanica Liu, sp. nov. (♂♀), Otacilia yusishanica Liu, sp. nov. (♂♀), O. zaoshiica Liu, sp. nov. (♂♀) and O. ziyaoshanica Liu, sp. nov. (♀). All species are described and illustrated with photographs and SEM micrographs, and their distribution is also mapped.

Five new species of salticids were collected from China: Synagelides emangou Liu, sp. nov. (♂, ♀) from Gansu province, and S. jinding Liu, sp. nov. (♂), S. serratus Liu, sp. nov. (♂, ♀), S. shuqiang Liu, sp. nov. (♂), and S. triangulatus Liu, sp. nov. (♀) from Jiangxi Province. All species are described and illustrated with photographs and SEM micrographs, and their distributions are also mapped.

The male of Borboropactus jiangyong Yin, Peng, Yan & Kim, 2004 is described for the first time from Jinggang Mountain, Ji’an City, Jiangxi Province, China. Based on male and female specimens, the species is redescribed, comprehensively illustrated, and its geographic distribution in China is delimited and discussed.

The male of Psechrus jinggangensis Wang & Yin, 2001 is described for the first time based on many specimens from its type locality, Jinggang Mountain National Nature Reserve, Ji'an City, Jiangxi province, China. Detailed illustrations, SEM images, and distribution map are given.

The male of Psechrusjinggangensis Wang & Yin, 2001 is described for the first time based on many specimens from its type locality, Jinggang Mountain National Nature Reserve, Ji’an City, Jiangxi province, China. Detailed illustrations, SEM images, and distribution map are given.

Phrurolithidae spiders were collected from Jinggang Mountain National Nature Reserve, Jiangxi Province, China, during the past six years. The new genusAlboculusLiu,gen. nov., with the type speciesPhrurolithus zhejiangensisSong & Kim, 1991, is described, and its previously unknown male is described for the first time. Furthermore, seven new species ofOtaciliaare described:O. acutangulaLiu,sp. nov.(♂♀),O. bijiashanicaLiu,sp. nov.(♂♀),O. longtanicaLiu,sp. nov.(♀),O. ovoideaLiu,sp. nov.(♂♀),O. shenshanicaLiu,sp. nov.(♂♀),O. subovoideaLiu,sp. nov.(♂♀), andO. xiaoxiicaLiu,sp. nov.(♀). All species are illustrated with photographs and their distributions are mapped.

The genus Criorhina consists of honey-bee and bumblebee mimic flower flies with a strongly produced face. It is widespread in the Holarctic and Oriental Regions. Criorhina adults are usually found flying near white spring flowers in woodlands and shrubs. The Chinese Criorhina fauna is poorly known and includes seven species. In our flower fly collection of Henan Province, northern China, an eighth new species was discovered: Criorhina rostrata Li, Huo & Li sp. nov. This new species is here described and illustrated. The new species possess a very long proboscis, unique amongst the Criorhina species from mainland China. In addition, during the course of this study, Criorhina brevipila Loew, 1871 was also found to be present in mainland China, based on a specimen from our collection. A key to the species of Criorhina from mainland China is given.

Two new species of Tonsilla Wang & Yin, 1992 are described from Jinggang Mountain National Nature Reserve, Jiangxi Province, China: T. jinggangensis K. Liu & X. Xu, sp. nov. (♀) and T. subyanlingensis K. Liu & X. Xu, sp. nov. (♂♀). The new species are illustrated, and their distributions are mapped. Detailed generic characters and an updated key to Tonsilla species are also given.

Description of Microdon dentigiganteum Tian, Huo et Zhang, sp. nov. (Figs 2, 3, 4, 5D) Diagnosis. Lateral oral margins not produced. Scutellum with large size calcars. Propleuron pilose. Basotarsomere of legs about 2 times as wide as apex of tibiae. Postero-apical corner of cell r 4+5 rounded. Apical crossvein M 1 with a small inward appendix extending into cell r 4+ 5 in some specimens (Fig. 3H). Length ratio of terga III:IV is about 1:2. Aedeagus projecting conspicuously beyond apex of hypandrium, furcate close to base, with dorsal process slightly longer than ventral process. This species keys out to Microdon japonicus Yano, 1915 in the keys of Hironaga & Maruyama (2004) and Huo et al. (2007). The new species can be separated from M. japonicus by the entirely yellow pilose terga (partly black pilose in M. japonicus) and the black tibiae (basal 2/3 yellowish white in M. japonicus). MALE (Holotype). Body length: 12mm. Head: Roughly oval in frontal view (Fig. 2B), almost as wide as mesonotum. Eyes bare. Vertex and frons shining black, yellow pilose, the width of the vertex at the posterior margin of eyes is about 34% of head width. Eye margins converging at level of frons (Fig. 3B), with mutual distance about 57% width of posterior margin of vertex. Occiput widened, black, yellowish pilose, with gray white pollinosity. Face almost straight in profile; about equal to the width of the posterior margin of vertex; shining black and punctate, long yellowish pilose. Lateral oral margins not produced. Gena black, yellowish pilose. Antennal pits about as wide as high. Antenna black; antennal ratio approximately 4.8: 1: 4.2; arista bare, yellow, about as long as the basoflagellomere. Thorax: Scutum shining black with green hues, punctate, yellowish pilose. Scutellum dark orange, except anterior margin which is widely black with green hues; yellowish pilose; with deeply concave posterior margin; with huge posterolateral calcars conspicuously longer than 1/2 of the scutellum length. Pleuron shining black with green hues, punctate; all pile yellow.Anepisternum (Fig. 2D) pilose anteriorly and posterodorsally, with widely bare part in between, which nearly reaches anepisternum dorsally. Anepimeron pilose anteriorly. Katepisternum pilose posterodorsally; bare ventrally. Katatergum long yellowish-brown microtrichose. Metasternum yellow pilose. Wing: Hyaline, vein yellow; microtrichose; vein R 4+5 with appendix; vein M 1 more and less straight, perpendicular to vein R 4+5; postero-apical corner of cell r 4+5 rounded, without appendix; crossvein r-m located basal 1/4 of cell dm. Calypter and halter yellow. Legs: Black, except for dark brown tarsomeres 1���3 and brown tarsi 4���5; yellow pilose, except for brown pilose on tarsi. Tarsi are very wide and flat. Abdomen: Broadly oval, tapering, about 1.5�� the width of thorax. Lateral margin of terga II���IV thickened and bent downward. Abdomen black, except posterior part of tergum IV and sternum IV which are more or less red-brown, with green hues, punctate, yellow pilose. Length ratio of terga II���IV about 1: 2: 4. Genitalia (Fig. 4): Aedeagus projecting conspicuously beyond apex of hypandrium, furcate near its base, with dorsal process slightly longer than ventral process; surstylus knife-shaped (lateral view), with a short and wide lobe at ventral margin (see Fig. 4B, arrows), punctured; cercus roughly triangular. FEMALE. Body length: 14mm. Similar to male, except for the following differences: Face equal to width of frons and vertex, occupying about 40% of head width in frontal view. Length of tergum IV approximately equal to tergum V. Type material. HOLOTYPE: 1 ♂, CHINA, Qianshan, 450~ 550 m, Anshan, Liaoning province, 21���23.vi.2006, leg. Y.-N. Zhao (NENU). PARATYPES (3): 2 ♂, 1 ♀ CHINA, Qianshan, 450~ 550 m, Anshan, Liaoning province, 21���23.vi.2006, leg. X. Xing / J. Zhang / M. Cai (NENU). Etymology. The specific epithet is composed of the Latin words denti (tooth) and giganteum (great), and refers to the huge calcars on posterior margin of scutellum. Distribution. China (Liaoning province)., Published as part of Tian, Jing, Huo, Ke-Ke, Zhang, Chun-Tian & Ren, Bing-Zhong, 2019, Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China, pp. 65-76 in Zootaxa 4712 (1) on pages 66-67, DOI: 10.11646/zootaxa.4712.1.4, http://zenodo.org/record/3586838, {"references":["Hironaga, T. & Maruyama, M. (2004) The myrmecophilous hoverfly genus Microdon (Diptera, Syrphidae, Microdontinae) in Hokkaido, Japan, with descriptions of four new species. Bulletin of the National Science Museum, 30, 87 - 103.","Huo, K. - K., Ren, G. - D. & Zheng, Z. - M. (2007) Fauna of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera). Chinese Agricultural Science and Technology Press, Beijing, 512 pp."]}

Metadon spuribifasciatus (Huo, Ren et Zheng, 2007) (Fig. 7A) Microdon spuribifasciatus Huo, Ren et Zheng, 2007. Fanua of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera): 403. Diagnosis. Lateral oral margins not produced. Scutum entirely short yellow pilose. Scutellum roughly semicircular, with very small calcars. Propleuron with microtrichia. Abdomen narrow, less than 1.5 times the width of the thorax. Lateral margins of the abdomen are markedly thickened except at the junction of terga II and III. Length ratio of terga III–IV about 1: 1. Examined material: 1♀, Lushuihe, 760 m, Fusong, Jilin province, 8.vii.2017, leg. J. Tian (NENU). Remarks. This species was established by Huo et al. (2007) and originally placed in the genus Microdon. Reemer & Ståhls (2013a) transferred some species, including M. spuribifasciatus, from genus Microdon to Metadon based on characters of the mesopleuron and male genitalia. We found the external characters of this species were in accordance with those of the genus Metadon, including the katepimeron with wrinkled texture, katatergum with oblique rows of microtrichia, elongated abdomen, and the anepisternum pilose except for its ventral half. According to Reemer & Ståhls (2013a), in Metadon the anepisternum is usually entirely pilose or with a small bare part ventrally, except in M. bifasciatus Matsumura, the sibling species of M. spuribifasciatus, in which the anepisternum is bare on the entire ventral half., Published as part of Tian, Jing, Huo, Ke-Ke, Zhang, Chun-Tian & Ren, Bing-Zhong, 2019, Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China, pp. 65-76 in Zootaxa 4712 (1) on pages 67-70, DOI: 10.11646/zootaxa.4712.1.4, http://zenodo.org/record/3586838, {"references":["Huo, K. - K., Ren, G. - D. & Zheng, Z. - M. (2007) Fauna of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera). Chinese Agricultural Science and Technology Press, Beijing, 512 pp.","Reemer, M. & Stahls, G. (2013 a) Generic revision and species classification of the Microdontinae (Diptera: Syrphidae). ZooKeys, 288, 1 - 213."]}

Microdon ignotus Violovitsh, 1976 (Fig. 7D) Microdon ignotus Violovitsh, 1976. Novosti fauny Sibiri (Novye i maloizvestnye vidy fauny Sibiri, 10): 160. Diagnosis. Lateral oral margins not produced. Scutum mainly long yellow pilose, except for posteromedial patches of black pile. Scutellum with slightly concave posterior margin, without calcars. Basotarsomere of proleg just a little wider than the apex of protibia. Postero-apical corner of cell r 4+5 rounded, without outward appendix. Length ratio of terga Ш���IV is about 1: 2.2. Examined material: 1♂, Tiechashan, 500~ 950 m, Benxi, Liaoning province, 28.v.2006, leg. C.- T. Zhang (SYNU)., Published as part of Tian, Jing, Huo, Ke-Ke, Zhang, Chun-Tian & Ren, Bing-Zhong, 2019, Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China, pp. 65-76 in Zootaxa 4712 (1) on page 71, DOI: 10.11646/zootaxa.4712.1.4, http://zenodo.org/record/3586838, {"references":["Violovitsh, N. A. (1976) A short review of the species of the genus Microdon Meiten (Diptera: Syrphidae) from the fauna of the USSR. Novosti Fauny Sibiri, 1976, 55 - 161."]}

Microdon oitanus Shiraki, 1930 (Fig. 7E) Microdon oitanus Shiraki, 1930. Mem. Fac. Agric. Taihoku Imp. Univ. 1: 18; Huo, Ren et Zheng, 2007. Fanua of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera): 400. Diagnosis. Bronze glossy fly. Lateral oral margins not produced. Scutum entirely long yellow pilose. Scutellum with straight posterior margin, with small calcars. Postero-apical corner of cell r 4+5 rounded, without outward appendix. Length ratio of terga III���IV is about 1: 2.5. Examined material: 1♂, 1♀, Shuidong, 350~ 450 m, Benxi, Liaoning province, 12.vi.2010, leg. H.-J. Tao & C.-T. Zhang (SYNU)., Published as part of Tian, Jing, Huo, Ke-Ke, Zhang, Chun-Tian & Ren, Bing-Zhong, 2019, Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China, pp. 65-76 in Zootaxa 4712 (1) on pages 71-72, DOI: 10.11646/zootaxa.4712.1.4, http://zenodo.org/record/3586838, {"references":["Shiraki, T. (1930) Die Syrphiden des japanischen Kaiserreichs, mit Berucksichtigung benachbarter Gebiete. Memoirs of the Faculty of Science and Agriculture, Taihoku imperial University, 1, 1 - 446.","Huo, K. - K., Ren, G. - D. & Zheng, Z. - M. (2007) Fauna of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera). Chinese Agricultural Science and Technology Press, Beijing, 512 pp."]}

Hoverflies (Diptera: Syrphidae) of the subfamily Microdontinae were surveyed in Northeast China. A total of six species were identified, including one new to science, Microdon dentigiganteum sp. nov. from Liaoning. This new species has a pair of very large-size posterior calcars on the scutellum and very wide flat tarsi. New records of Metadon spuribifasciatus (Huo, Ren et Zheng, 2007), Microdon analis (Macquart, 1842) and Microdon auricomus Coquillett, 1898 from Jilin province, and Microdon ignotus Violovitsh, 1976 and Microdon oitanus Shiraki, 1930 from Liaoning province are provided. A key to the six studied species and diagnostic figures are presented.

Huo, Ke-Ke (2014): Spazigasteroides a new genus from China with a black face and scutellum in the Syrphini (Diptera: Syrphidae). Zootaxa 3755 (3): 230-240, DOI: http://dx.doi.org/10.11646/zootaxa.3755.3.2

Spazigasteroides gen. nov. Type species: Spazigasteroides caeruleus sp. nov. Etymology. The new genus is named by adding – oides posteriorly to its allied genus Spazigaster. The new name Spazigasteroides is considered masculine. Diagnosis. Face black, whitish pollinose and black (in male) or whitish pilose (in female). Facial tubercle located at lower third of head, abrupt ventrally. Head strongly concave posteriorly and closely appressed to thorax so that the bare postpronota are entirely hidden. Pile on scutum short black, but on lateral margins intermixed with long bristle-like pile, in male with long black pile posteriorly. Scutellum black, with intermixed black and white pilosity, in male pile long and short, with longest about 5 to 6 times as long as shortest. Postmetacoxal bridge incomplete. Metasternum bare. Katepimeron with pilose patches broadly separated posteriorly. Wing with steel blue reflection in sunshine from some views, deep brown on anterior margin; M 1 with a short appendix near the wing apex in some individuals. Wing membrane microtrichose, except cells r, bm and cup, anal lobe with bare regions, alula mostly bare except for microtrichose margin. Abdomen petiolate, longer than head and thorax together, flat; with terga 2, 3 and 4 nearly equal in length; tergum 2 slightly constricted backward, the narrowest part on end of tergum 2, abdomen gradually broadens from tergum 3, the widest part on apical end of tergum 4; the narrowest part of abdomen less than half of the widest part. Abdomen black with dark blue reflection, tergum 2 with a pair of long, transparent, whitish yellow lateral maculae; in female tergum 3 basally with a pair of rectangular, transparent lateral maculae. Aedeagus of male two segmented.

Spazigasteroides caeruleus sp. nov. (Figs 1���14) Type material. Holotype: ♂, CHINA: Ningxia Hui Autonomous Region, Xixia, Jingyuan county, 2008 -VII- 8, Huo Ke-Ke (MABSUT); paratypes: same data as holotype (11 ♂; 1 ♂, in SSY; same data as holotype, but with followings date: 2008 -VII- 15 (11 ♂ 2 ♀, MABSUT, 1 ♂ 1 ♀, at USNM (National Museum of Natural History, Washington DC, USA)); same locality and collector, but with following date: 2008 -VII- 11 (1 ♂, MABSUT); Ningxia Hui Autonomous Region, Xixia, Jingyuan county, 2008 -VII- 7, Huo Ke-Ke (4 ♂, MABSUT); Ningxia Hui Autonomous Region, Xiaonanchuan, Jingyuan county, 2008 -VII- 11, Huo Ke-Ke (1 ♀, MABSUT); Ningxia Hui Autonomous Region, Wuguliang, Jingyuan county, 2008 -VII- 16, Huo Ke-Ke (1 ♂ 3 ♀, MABSUT); same data as above, but with following dates: 2008 -VII- 17, Huo Ke-Ke (4 ♂ 1 ♀, MABSUT); Ningxia Hui Autonomous Region, Erlonghe, Jingyuan county, 2008 -VII- 19, Huo Ke-Ke (1 ♀, MABSUT); Ningxia Hui Autonomous Region, Liangdianxia, Jingyuan county, 2008 -VII- 20, Huo Ke-Ke (2 ♂ 3 ♀, MABSUT); Shaanxi Province, Yingpan town, Liuba county, 2008 -VIII- 30, Huo Ke-Ke (1 ♂, MABSUT). Etymology. The new name is derived from the Latin word caeruleus (sky-blue), referring to wing with steel blue reflection in sunshine from some views. General appearance: medium-sized fly with a black face and scutellum, wing deep brown on anterior margin, with metallic steel blue reflections, abdomen petiolate, second abdominal segment slightly constricted, with a pair of long, transparent, whitish yellow lateral maculae dorsally, abdominal sternum 2 whitish, nearly transparent, aedeagus two segmented. Description. Male. Body length: 13���15 mm; wing length: 11���13 mm. Head. Wider than thorax, about 1.4 times as high as long, 1.29 time as broad as high. Black, with barely dark steel blue reflection. Eye holoptic, contiguity as long as 1 / 3 of frons; brown, densely dark brown pilose, whitish on lower part from some view. Vertical triangle long black pilose, narrowly elongate, about 2 times as long as eye contiguity. Ocellar triangle located before the middle of vertical triangle. Frontal triangle long black pilose, polished black anteriorly, thinly covered with whitish pollen basally along eye margins. Lunule shiny black, circularly protruded medially on anterior margin. Antennal pits confluent. Face concave below frontal prominence, facial tubercle nose-shaped, abrupt ventrally, at lower 1 / 3 of head. Face long black pilose and whitish pollinose laterally, white pilose near oral margin, leaving a longitudinal medial vitta which gradually tapers above facial prominence and not extends to antennal base. Gena black, white pollinose and long pilose, intermixed with sparse long black pile. Head concave posteromedially and entirely appressed to postpronotum; occiput narrow dorsally with black pile, broad laterally with white pollen and pile. Antenna black, black pilose on dorsal and ventral margins of scape and pedicel, basoflagellomere nearly as long as scape and pedicel combined together, slightly longer than wide, obtusely rounded apically; arista long, black with black pubescence. Thorax. Longer than wide. Postpronotum white pollinose. Scutum black with dark metallic steel blue reflection, sparsely brown pollinose, viewed posteriorly in medial portion with a pair of longitudinal grey pollinose vittae which extend beyond transverse suture; scutum short black pilose, intermixed with long black pile on posterior 1 / 3; pile on lateral margin longer, with some white pile intermixed posterior to postpronotum and thicker, bristly black pile above wing base and postalar callus. Notopleuron with thick, long black pile, intermixed with a few white pile. Scutellum 2.5 times as wide basally as long, black with dark blue tinge, sparsely grey pollinose, short whitish pilose, intermixed with a few short black pile, some long white pile, and a few long black pile basally, of which long pile about 5-6 times as long as short ones. Ventral scutellar fringe white, long, dense. Pleuron black with dark blue reflection, with sparse grey pollen which forms maculae on posterior anepisternum, dorsal katepisternum and anterior anepimeron, long whitish pilose on pronotum, posterior convex portion of anepisternum, anterior anepimeron, meron and anterior corner of katepisternum. Katepisternum with broadly separated dorsal and ventral pile patches, the latter of which smaller, distribute only along ventral medial line of thorax. Katatergum short light pubescent. Metasternum bare. Postmetacoxal bridge incomplete. Legs. Simple, slender, long, black, with femora thinly whitish pollinose. Pile on legs black, short, except for long white pile on coxae and trochanters, longer black and a few white pile on pro- and metafemora posteroventrally. Metafemur with posteroventral long black pile curved apically on apical portion. Metacoxa bare posteromedially. Metatarsus as long as tibia. Wing. Tinged with steel blue in sunshine from some views, deep brown on anterior margin (anterior to vein R 4 + 5 and anterior portion of cell r), otherwise hyaline. Vein R 4 + 5 straight, crossvein r-m at basal third of cell dm, vein M 1 sinuate, joined with vein R 4 + 5 and M 2 at right angle; cell r 2 + 3 open, cell cup petiolate, petiole about as long as crossvein h. Wing membrane microtrichose, except bare on basal 4 / 5 of cells r (posterior to spurious vein), bm (except for apex and posterior area along veins) and basal portion of cup and areas along veins; anal lobe with two vittate bare regions, alula mostly bare except for microtrichose margin. Calypteres whitish, narrow, distinctly thickened marginally, with dorsal calypter black marginally and short black fringe; ventral calypter whitish marginally and long whitish fringe. Halter dark brown with capitulum black. Abdomen. Elongate, slightly petiolate, longer than head and thorax together, flat; with terga 2, 3 and 4 nearly equal in length; tergum 2 constricted backward, the narrowest part on end of tergum 2, abdomen gradually broadens from tergum 3, the widest part on apical end of tergum 4; the narrowest part of abdomen less than half of the widest part. Abdomen black with dark blue reflection, tergum 2 with a pair of long, transparent, whitish yellow lateral maculae, broadly separated, not extending to margins, inner margin of which nearly arcuate; terga 3 and 4 with indistinct fasciae of whitish pollen, in some individuals tergum 3 with a pair of obscure, rectangular, transparent lateral maculae basally. Pile of abdomen short, black, except white and long pile on tergum 1 and lateral 2 / 3 of tergum 2 basally, and short white pile on terga 2 and 3 basally and tergum 4 basolaterally. Abdominal sterna black, black pilose, with sterna 1 and 2 long whitish pilose; sternum 2 whitish, nearly transparent; sternum 3 with yellowish white apical margin. Genitalia. Black. Cerci dark yellow brown, black pilose. Epandrium longer than high. Surstyli broadly triangular, broadly rounded apically, on outer surface with black bristle-like pile intermixed with long pile basally, short black pilose on inner surface. Surstylar apodeme triangularly convex on posterior margin medially. Hypandrium cylindrical, with triangular lingula on posteroventral margin medially, slightly higher than lateral arms. Superior lobe acute on posterior apex, doublemargined posterodorsally. Aedeagus two segmented, inflated apically, from lateral view aedeagal base acute on ventral margin, with two acute teeth viewed from posterolaterally. Aedeagal apodeme elongate, broadened apically. Female. Similar to the male but differing in the following features: Body length 11���16 mm; wing length 12���15 mm. Dichoptic, eye whitish pilose. Vertex and frons black pilose; vertex at posterior margins of eyes about 1 / 5 as broad as head width. Face white pilose, sparser than in male. Scutum and scutellum without long pile. Pile on legs shorter than in male; pro- and mesotibiae slightly brownish basally, femora with posteroventral long pile mostly white. Wing membrane with more extensive bare areas than in male. Tergum 3 with a pair of subrectangular, whitish yellow, transparent, lateral maculae, but obscure in some individuals. Distribution. The distribution of the new genus/species is given in Fig. 15., Published as part of Huo, Ke-Ke, 2014, Spazigasteroides a new genus from China with a black face and scutellum in the Syrphini (Diptera: Syrphidae), pp. 230-240 in Zootaxa 3755 (3) on pages 231-234, DOI: 10.11646/zootaxa.3755.3.2, http://zenodo.org/record/228676

Flavizona dolichostigma Huo, sp. nov. Figs. 1���5 Diagnosis: small sized, black flies with wing lacking dark brown macula and abdomen yellowish orange on terga 1, 2 and basal third of tergum 3. Adult: Body length: 11 mm (3) or 10 mm (��); wing length: 9 mm (3) or 9 mm (��). Head: Eye dark brown, holoptic, densely long dark brown pilose, but yellowish posteroventrally from some views. Eyes joined for a distance shorter than length of frons. Vertex narrow, shorter than eye contiguity. Frons black, lustrouse anteriorly, sparsely long black pilose, basally covered with gray pollen which obscured background. Lunule shining black. Face subcarinated, underneath frontal prominence shallowly concave, and then extended obliquely downwards and forward, facial tubercle indistinct, which is only a small prominence at ventral third of face from lateral view. Face dull brown, gray pollinose, obscured background, thinly black long hairs intermixed with some yellowishwhite ones, leaving facial medial vitta black, lustrous, about 1 / 3 face in width, laterally below eyes with black vittae. Gena blackish brown, gray pollinose, covered thinly with whitish long pile. Occiput narrower, black pilose with a row of black long hairs along posterior margin of eyes on dorsal portion, gradually broadened laterally downwards with whitish pollen and pile which is longer on lower parts. Antenna black, dorsal and ventral margins of two basal segments black pilose, basoflagellomere as long as two basal segments combined together, about twice as long as wide, apex bluntly rounded. Arista long, black with microscopic pubescence. Thorax: Scutum longer than wide, black with bluish reflection, covered with gray pollen which obscured background and formed indefinitely lateral vittae before transverse suture and in the middle portion a pair of definite gray vittae extending beyond transverse suture. Pile long, yellowish, intermixed with some black pili anteromedially. Scutellum black, but slightly yellow brown apically, thinly gray pollinose, with yellowish long pile and dense ventral scutellar fringe. Pleura shining black, slightly with bluish tinge, gray pollinose, which obscures background of anepisternum, posterodorsal part of katepisternum, anepimeron and katepimeron. Pleural pile long, yellowish to yellowish white, but meron bare. Pile patches on katepisternum broadly separated posteriorly. Metasternum bare. Legs: black, but yellowish brown on apices of femora, pro- and mesotibiae and basal 1 / 3 of metatibiae; pro- and mesotibiae with dark markings on apical part; pro- and mesotarsi dull brown. Pile of legs mainly black, except for yellow ones on pro- and mesotibiae. Pro- and mesofemora with black long pile on posteroventral portion throughout. Metacoxa black long pilose without a pile tuft posteromedially, femur anteroventrally with black long hairs, metatarsi nearly as long as metatibiae. Wing: entirely microtrichose, hyaline, in middle portion without dark brown macula. Cell R 1 open; Vein r 4 + 5 straight, joined with m 1 in a right angle. Vein r-m located before middle of cell DM. Pterostigma brownish black, long, extending from apex of vein sc to apex of vein r 1 + 2. Calypteres dull brown with fringes of same color. Halter brown with yellowish capitulum. Abdomen: without premarginal sulcus, elongate oval, parallel-sided, tapered backward from tergum 4. Abdominal terga of 1, 2 and basal third of tergum 3 yellowish orange, the rest black with a little blue reflection, Pile of similar color to background, which is longer basally on lateral margins. Sterna have similar color and pile to that on terga, but pile nearly adpressed on posterior 2 / 3 of sternum 4 and other sterna behind. Female: Dichoptic. Width of vertex between posterior margins of eyes slightly less than 1 / 4 head width. Ocellar triangle slightly convex. Ocelli equilateral triangle. Vertex and frons gradually broadened forward, shiny black, brown pollinose and long black pilose. Antenna shorter than in male. Thoracic pile whitish yellow. Scutum on anterior half gray pollinose, obscured background. Scutellum distinctly yellow brown on posterior half. The other characters are similar to in male. Type material: Holotype: 3 (deposited in BKLSUT). CHINA: Henan Province, Baiyun Mountain, Song County, Aug. 17, 2008, collected by Huo Ke-Ke; paratype: �� (deposited in BKLSUT). CHINA: Sichuan Province, Hongba, Jiulong County, Sep. 26, 2008, collected by Shi Fu-Min. Etymology: The new name is derived from the Greek words dolich- (long) and stigma (pterostigma), referring to long pterostigma. Distribution: China (Henan Province, Sichuan Province)., Published as part of Huo, Ke-Ke & Shi, Fu-Min, 2010, Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China, pp. 47-54 in Zootaxa 2428 on pages 51-53, DOI: 10.5281/zenodo.194676

Flavizona Huo, gen. nov. Type species: Flavizona dolichostigma Huo, sp. nov. Eye densely dark long pilose, holoptic in male, but dichoptic in female. Face subcarinate, extended obliquely downwards and forward, with small, indistinct medial tubercle, and shiny, black medial vitta and lateral vittae. Occiput narrower dorsally, gradually broadened downwards laterally. Antenna black, basoflagellomere nearly as long as basal two segments together, about twice as long as wide, apex broadly rounded. Arista black with microscopic pubescence. Thorax longer than wide, black, thinly gray pollinose, in anterior portion of scutum with a pair of distinct gray medial vittae extending beyond transverse suture. Thoracic pile yellowish brown (in male) to nearly whitish (in female). Scutellum black, but yellow brown apically, especially so in female, pile long, yellowish brown. Metasternum bare. The pile patches on katepisternum broadly separated posteriorly. Metacoxa lacks a pile tuft at posteromedial apical angle. Wing entirely microtrichose, hyaline, in middle portion without dark brown macula. Vein r 4 + 5 straight, joined with m 1 in a right angle. Vein r-m located before middle of cell DM. Pterostigma brownish black, long, extending from apex of vein sc to apex of vein r 1 + 2. Abdomen lacks premarginal sulcus, elongately oval, parallel-sided, from tergum 4 backward tapering. Abdominal terga of 1, 2 and basal third of tergum 3 yellowish orange, the rest black, pile of similar color to background. Discussion: In appearance the new genus is extremely similar to Leucozona Schiner, 1860. Their eyes densely long dark pilose, face bearing lustrous black medial vitta and lateral vittae. Abdomen black, but light on terga 1, 2 and basal third of tergum 3. The new genus can easily be distinguished from the latter by small, indistinct facial tubercle, wing without dark brown macula medially, and elongate oval abdomen without premarginal sulcus. Etymology: The new name is derived from the Latin words flav- (yellow) and zona (waistband), referring to abdomen in light color basally. Gender is feminine.

In the present paper a new genus of Syrphini from China is described: Flavizona Huo, gen. nov. The type species is designated as Flavizona dolichostigma Huo, sp. nov. The new genus is similar in appearance to Leucozona Schiner, 1860, but can easily be distinguished from the latter by indistinct facial medial tubercle, wing without dark brown medial maculae and elongate oval abdomen without premarginal sulcus. A key to genera of Syrphini in China is provided.