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Eurydice tridentata sp. nov. (Figs. 2, 4 d���f) Eurydice inermis. Bruce & Jones 1978: 397, fig. 6 h (not E. inermis Hansen, 1890). Material examined. Holotype. Male (SMF 34843): sta. RS 112 near Eilat, Israel, Red Sea, ichthyoplankton, coll. L. Fishelson, 4 Feb. 1985. Paratypes: 3 males, 2 females (SMF 34844): sta. RS 112 near Eilat, Israel, Red Sea, ichthyoplankton, coll. L. Fishelson 4 Feb. 1985, same locality as type material 3 males, 2 females R 138 (SMF 39703), R 20 1 male (SMF 39704), RS 136 1 male, 3 females, juv. (SMF 39705) coll. L. Fishelson, 1986. Description. Male holotype: Body, 4.8 mm in length, 3.2 times as long as greatest width at pereonite 5. Cephalon anterior margin rounded, eyes well developed with 7 ocelli horizontally and 5 vertically. Coxae 2���7 with acute angles at posterolateral margins, those of 6���7 produced. Pleonites 2���5 equal in length, pleonite 1 narrow, half length of others. Ventral margins of pleonites 2���5 acute, posterior margin of pleonite 5 straight. Pleotelson 1.3 times wider than long and 4.6 times wider than posterior margin which is truncate and bordered by pronounced teeth. Posterior margin bears 7 apical teeth with the 3 central teeth pronounced; 6 plumose and 2 simple marginal setae are present. Antennule reaching to posterior margin of pereonite 3, peduncle articles 2 and 3 subequal in length, each bearing a single seta on anterior margin; flagellum of 4 articles, article 1 equal in length to articles 2���4 combined; all articles bearing elongate aesthetascs; flagellar article 4 with 5 terminal setae, one of which is stiff and is twice the length of the combined antennular articles. Antenna reaching to midlength of pleotelson; length of peduncular articles 1 and 2 combined just exceeds length of article 3; article 4 just shorter than combined length of articles 1���3. Article 2 anterodistal angle with 3 simple setae, article 3 with 3 setae and article 4 with 8 anterior marginal setae. Flagellum with 23 articles, proximal articles half the length of distal articles; each article with 2 long and 1 short setae on anterodistal angle and a plicate process on posteroproximal angle. Setae on article 21 over half length of article 22, terminal seta equal in length to last 3 flagellar articles. Mandible spine row with 6 spines; molar process anterior margin with 17 spines. Terminal article of mandibular pulp 5 times as long as broad with 9 setae. Article 2 with 2 long setae on posterodistal angle, reaching beyond apex of palp. Maxillule lateral lobe with 13 spines on gnathal surface, medial lobe with 3 stout circumplumose setae and 2 simple setae. Maxilla as for other species in the genus (not figured). Maxilliped palp with all articles entire, terminal article of palp with 10 simple setae; endite with 1 plumose and 2 simple setae. Pereopod 1 moderately setose with robust seta opposing dactylus half length of dactylus; posterior margin of ischium with 2 robust setae. Merus anterodistal angle without robust setae but with 9 simple setae; posterior margin with 5 robust setae. Pereopod 2 similar but with robust seta opposing dactylus only one third length of dactylus. Two robust setae on posterior margin of ischium and 4 on posterior margin of merus, anterodistal margin with no robust setae but 11 simple setae. Pereopod 3 with 2 robust setae on posterodistal margin of propodus; merus with 3 robust setae on posterodistal margin; carpus with 4 robust setae on posterodistal margin and 2 on posterolateral margin. Ischium with 4 robust setae on posterodistal margin and one group of 2 on posterolateral margin; basis with a single robust seta on posterodistal margin and 5 simple setae. Pereopod 7 setose, propodus anterior margin with 6 robust and 4 simple setae; posterior margin with 7 robust and 8 simple setae. Merus with 8 robust and 8 simple setae on the anterior margin and 7 robust and 16 simple setae on the posterior margin. Ischium with 6 robust setae and 9 simple setae on the anterior margin and 5 robust and 6 simple setae on the posterior margin. Pleopod 1 endopod shorter and narrower than exopod; endopod with 25 and exopod with 30 plumose setae; exopod 1.25 times wider than endopod. Pleopod 2 exopod with 25 and endopod with 21 plumose setae. Appendix masculina of even width, slightly curved, terminating in a strong pointed process, distal third covered with microtrichs and extending beyond apex of endopod by one fifth of its length. Uropod endopod 1.3 times length of exopod bearing 10 plumose setae on posterior margin and 6 simple setae on lateral margin; exopod triangular with posterior margin straight and 6 setae on laterodistal angle and 7 plumose setae plus 2 simple setae on posterior margin; extending to posterior margin of pleotelson. Female: As for male but body broader, antennule shorter reaching posterior margin of pereonite 2; antenna shorter, reaching posterior margin of pereonite 4. Colour. Brown in alcohol with large black chromatophores on dorsal surface of body and ventrolateral surfaces of pleonites 1���3. Remarks. The truncate posterior margin of the pleotelson has 7 apical teeth, central 3 prominent, no robust setae, but 6 plumose and 2 simple setae. These characters together with the appendix masculina with a straight pointed apex diagnose E. tridentata sp. nov. Comparison of present material with Bruce & Jones (1978, fig 6 h) Eurydice? inermis shows that the appendix masculina of material from Yanbu, Saudi Arabia is similar to that of E. tridentata and not E. inermis Hansen. The rounded posterior pleotelson margin with 6���9 apical teeth, shorter length of antennae and absence of flagellar plicate processes in E. inermis further separates this species from E. tridentata. The only other species with a truncate pleotelson posterior margin and male antennae reaching the pleotelson is E. orientalis Hansen, 1890. Although the pleotelson posterior margin dentition of this species (Bruce 1986) is very similar to that of E. tridentata, the three central teeth are prominent in E. tridentata and only 6 plumose and two simple setae are present. The terminal process of the appendix masculina is angled and blunt in E. orientalis, but straight and pointed in E tridentata. In E. orientalis the antennule flagellum reaches no further than pereonite 1, but reaches pereonite 3 in E. tridentata, and the antennal flagellum reaches the mid pleotelson in E. tridentata but reaches the end of the pleotelson in E. orientalis. Etymology. The specific name recognises the pronounced three central teeth on the pleotelson posterior margin., Published as part of Jones, David Alan & Nithyanandan, Manickam, 2012, Taxonomy and distribution of the genus Eurydice Leach, 1815 (Crustacea, Isopoda, Cirolanidae) from the Arabian region, including three new species, pp. 45-57 in Zootaxa 3314 on pages 48-51, DOI: 10.5281/zenodo.210845, {"references":["Bruce, N. L. & Jones, D. A. (1978) The systematics of some Red Sea Isopoda (Family Cirolandae) with descriptions of two new species. Journal Zoological Society, London, 185, 395 - 413.","Bruce, N. L. (1986) Cirolanidae (Crustacea: Isopoda) of Australia. Records of the Australian Museum, Supplement 6, 1 - 239."]}

Eurydice marzouqui sp. nov. (Figs 1, 4 a���c) Material examined. Holotype. Male 3.4 mm, (SMF 34840): sta. 5 G- 3 Tarut Bay, Saudi Arabia, seagrass beds, coll. J. McCain, 11 June 1984. Paratypes: 1 male (SMF 34841): Sabah Al-Ahmad Sea City Waterways, Kuwait, ichthyoplankton, coll. B. R. Sontakke, 12 May, 2008. 2 females (SMF 34842) sta 7 RG off Manifa, Saudi Arabia, seagrass beds, coll. S.M. Ali, Feb. 1986. Description. Male holotype: Body 2.9 times as long as greatest width at pereonites 4 and 5. Cephalon anterior margin evenly rounded, eyes small with 7 ocelli horizontally and 6 vertically. Coxae 2���7 with acute angles at posterolateral margins. Pleonites of equal length, pleonite 1 slightly concealed by posterior margin of pereonite 7. Ventral margins of pleonites 2���5 acute, posterior dorsal margin of pleonite 5 sinuous, centrally convex. Pleotelson as broad as long, anterior margin 5 times width of posterior margin, which is slightly rounded, and bears 6 apical teeth, 8 simple setae and 6 plumose setae. Antennule barely reaching mid-point of eye, flagellum of 4 articles, article 1 longer than combined length of articles 2���4. Antenna peduncle reaching to pereonite 1; article 1 with 2 setae on anterodistal angle, article 3 with 3 anterodistal setae; article 4 longer than articles 2 and 3 combined; flagellum of 21 articles reaching posterior margin of pereonite 7; flagellum terminal seta is 0.2 length of flagellum. Mandible spine row with 5 spines; molar process anterior margin with 14 spines. Terminal article of mandibular palp twice as long as broad, with 8 setae. Maxillule lateral lobe with 13 robust setae on gnathal surface, medial lobe with 3 stout circum plumose setae and 2 simple setae. Maxilla lateral lobe with 3 setae, middle lobe with 3 setae and medial lobe with 3 plumose and 2 simple setae. Maxilliped palp with all articles entire, terminal article with 6 simple setae; endite with 1 plumose and 2 simple setae. Pereopods 1���3 sparsely setose, pereopod 1 and 3 figured. Pereopod 1 with robust seta opposing dactylus half length of dactylus; posterior margin of ischium with 2 robust setae; merus with single anterodistal robust seta and 2 simple setae. Pereopod 2 similar but with robust seta opposing dactylus only one third length of dactylus. No robust setae on posterior margin of ischium and 3 simple setae only on anterodistal margin of merus. Pereopod 3 with 4 robust setae on the posterodistal margin of propodus and 2 robust setae on posterior margin; merus with 4 posterodistal robust setae; carpus with 3 posterodistal and 2 on the posterolateral margin. Ischium with 3 posterodistal and 2 groups of 2 robust setae on posterior margin; basis with 4 simple setae on posterodistal angle. Pereopod 7 sparsely setose, propodus anterior margin with 6 robust and 1 simple seta; posterior margin with 3 robust and 2 simple setae. Merus with 5 robust and 3 simple setae on anterior margin; posterior margin with 4 robust setae. Carpus with 4 robust and 4 simple setae on anterior margin and 4 robust setae on posterior margin. Ischium with 3 robust and 2 simple setae on anterior margin and 2 robust setae on posterior margin. Pleopod 1 with rami subequal in length, exopod with 17 plumose setae, endopod with 11, exopod 1.5 times wider than endopod. Pleopod 2 exopod and endopod with 17 and 15 plumose setae respectively. Appendix masculina of even width, distally straight, apex rounded, appendix masculina 0.7 as long as endopod, projects beyond endopod by one tenth of its length. Uropod endopod 1.4 times length of exopod, bearing 9 plumose setae on posterior margin and 5 simple setae on lateral margin. Exopod ovate with 4 simple setae on lateral margin and 6 plumose and 3 simple setae on posterior margin. Both rami do not reach pleotelson posterior margin. Female: As for male but body broader, antennae shorter reaching posterior margin of pereon segment 5. Colour. Translucent with black chromatophores on dorsal surface of cephalon, pereon and pleon, extending onto ventrolateral surfaces of pleon. Remarks. The slightly rounded posterior margin of the pleotelson with 6 equal sized apical teeth and an absence of robust setae, combined with straight appendix masculina, with a blunt unornamented apex, are the characters which diagnose E. marzouqui sp. nov. This is the first subtidal species to be recorded from the Arabian Gulf and it is separated from the intertidal species E. peraticis and E. paxilli by the absence of robust setae on the posterior margin of the pleotelson. The absence of robust setae, together with a narrow posterior pleotelson margin, are common features amongst subtidal Eurydice species, but E. marzouqui may be separated from all others by the number of apical teeth, plumose setae and appendix masculina shape. Only E. tarti Bruce 1986 has a similar rounded apex to the appendix masculina, but in E. tarti the appendix masculina is curved and the posterior margin of the pleotelson is acute. The appendix masculina of E. inermis from Greece is reproduced in Figure 5 to show that, unlike that of E. marzouqui, it broadens towards the apex which is triangular. Etymology. This species is named for Fawaz Al-Marzouq who created the Sabah Al-Ahmad Sea City in whose waterways E. marzouqui was discovered., Published as part of Jones, David Alan & Nithyanandan, Manickam, 2012, Taxonomy and distribution of the genus Eurydice Leach, 1815 (Crustacea, Isopoda, Cirolanidae) from the Arabian region, including three new species, pp. 45-57 in Zootaxa 3314 on pages 47-48, DOI: 10.5281/zenodo.210845, {"references":["Bruce, N. L. (1986) Cirolanidae (Crustacea: Isopoda) of Australia. Records of the Australian Museum, Supplement 6, 1 - 239."]}

Jones, David Alan, Nithyanandan, Manickam (2012): Taxonomy and distribution of the genus Eurydice Leach, 1815 (Crustacea, Isopoda, Cirolanidae) from the Arabian region, including three new species. Zootaxa 3314: 45-57, DOI: 10.5281/zenodo.210845

Eurydice arabica Jones, 1974 (Fig. 5 a, b) Eurydice arabica Jones 1974: 202, fig. 2 a���g.��� Bruce 1986: 221. Material examined. 3 females (SMF 40852) low tide, subtidal sand, Bahrain sta. 850805 A 5, Mashtan Island, coll. D.A. Jones 1985; 1 juv (SMF 40853) subtidal sand, Kuwait, Al-Ahmad Sea City waterways, sta. NS06 coll. B.R. Sontakke 2009. Remarks. This species has been extensively collected in the Red Sea (Jones 1974; Dexter 1986 / 7; Dexter 1989) from intertidal sand, but present records from Bahrain and Kuwait are the first for the Arabian Gulf. The appendix masculina and pleotelson posterior margin are figured (Fig. 5 a, b), together with those of E. paxilli (Fig. 5 d, e) and E. inermis (Fig. 5 f) to assist with the identification key., Published as part of Jones, David Alan & Nithyanandan, Manickam, 2012, Taxonomy and distribution of the genus Eurydice Leach, 1815 (Crustacea, Isopoda, Cirolanidae) from the Arabian region, including three new species, pp. 45-57 in Zootaxa 3314 on page 55, DOI: 10.5281/zenodo.210845, {"references":["Jones, D. A. (1974) The systematics and ecology of some sand beach isopods (family Cirolanidae) from the coasts of Saudi Arabia. Crustaceana, 26 (2), 201 - 211.","Bruce, N. L. (1986) Cirolanidae (Crustacea: Isopoda) of Australia. Records of the Australian Museum, Supplement 6, 1 - 239.","Dexter, D. M. (1986 - 87) Sandy beach fauna of Mediterranean and Red Sea coastlines of Israel and the Sinai Peninsula. Israel Journal of Zoology, 34, 125 - 138.","Dexter, D. M. (1989) The sandy beach fauna of Egypt. Estuarine, Coastal and Shelf Science, 29, 261 - 271."]}