taxonID	type	description	language	source
039187EAFF9FFFA5F6BCF39FFD35D998.taxon	materials_examined	Type material: 1 male Holotype (IZCAS Ar 19317), sifting leaf litter, China: Hainan, Wuzhishan Natural Reserve, Shanye Tavern, 911 m, 18 ° 54.418´N, 109 ° 40.647´E, April 26, 2011, leg. Yuanye Zhou; 2 female paratypes (IZCAS Ar 19317), same data as holotype; 1 male and 5 female paratypes (IZCAS Ar 19327), sifting leaf litter, China: Hainan, Limushan Natural Reserve, Qulinggulin Garden, 654 m, 19 ° 10.686´N, 109 ° 44.490´E, August 12, 2007, leg. Chunxia Wang; 2 female paratypes (IZCAS Ar 19336), sifting leaf litter, China: Hainan, Wuzhishan Natural Reserve, plank in tropical forest, August 7, 2007, leg. Chunxia Wang; 1 female paratype (IZCAS Ar 19338), sifting leaf litter, China: Hainan, Wuzhishan Natural Reserve, tropical forest, April 28, 2011, leg. Yuanye Zhou; 1 female paratype (IZCAS Ar 19337), sifting leaf litter, China: Hainan, Jianfengling Natural Reserve, Ecology Protection Station, 820 m, 18 ° 44.415´N, 108 ° 51.802´E, May 17, 2011, leg. Yuanye Zhou; 1 male paratype (IZCAS Ar 19331), sifting leaf litter, China: Hainan, Yinggeling Natural Reserve, Yinggezui, around waterfall, 622 m, 19 ° 03.037´N, 109 ° 44.899´E, May 8, 2011, leg. Yuanye Zhou.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9FFFA5F6BCF39FFD35D998.taxon	etymology	Etymology: The specific name means ‘ ear-shaped’ in Latin, and refers to the shape of the palpal apophysis; adjective.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9FFFA5F6BCF39FFD35D998.taxon	diagnosis	Diagnosis: The female resembles that of Ischnothyreus serpentinum Saaristo, 2001, but can be distinguished by the larger atrium (Figs 2 C, D), the shape of the postepigastric scutum and the larger dorsal scutum. The male resembles that of I. danum Kranz-Baltensperger, 2011, but differs in lacking the brush-like process at the base of the cheliceral fangs (Figs 1 F, G, 2 G).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9FFFA5F6BCF39FFD35D998.taxon	description	Description: Male (holotype). Total length 1.55 mm. Carapace: orange-brown, with brown egg-shaped patches behind eyes, oval in dorsal view, pars cephalica strongly elevated in lateral view, surface and sides strongly reticulate. Eyes: six, in one group, well developed, ALE largest, PME and PLE nearly equal sized; posterior eye row straight from above, procurved from front. Mouthparts: chelicerae slightly divergent, with strongly sclerotized hook-like process (hlp) and a prominent laminar process (lp) at base of fangs; fang groove with a few small and one larger denticles (Figs 1 F, G, 2 G). Anterior margin of labium not indented at middle. Anteromedian tip of endites with one strong, tooth-like projection. Abdomen: book lung covers dark, large, elliptical. Posterior spiracles not connected by groove. Pedicel tube short, unmodified, scutum extending far dorsal of pedicel. Dorsal scutum covering about total of abdomen, about equal to the abdomen width, not fused to epigastric scutum. Epigastric and postepigastric scutum well sclerotized, pale orange, fused. Leg spine formula: femur I with 2 prolateral and 1 small retrolateral spine, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Spination of leg II similar to leg I except femur with only one prolateral spine. Legs III and IV spineless. Genitalia: Sperm pore situated at level of anterior spiracles. Palp strongly sclerotized, trochanter with ventral projection (vp); patella about as long as femur, not enlarged; cymbium brown, not fused with bulb, bulb brown, more than 2 times as long as cymbium, stout, tapering apically, with one large ventral protuberance (vpr), at the bending site with a lobe (l), distal part of bulb with an ear-shaped apophysis (esa) (Figs 2 A, B, E, F). Female (paratype). Total length 1.96 mm. As in male except as noted. Carapace: without any pattern, pars cephalica slightly elevated in lateral view. Mouthparts: chelicerae and endites unmodified. Abdomen: dorsal scutum covering about 2 / 3 of abdomen, about 2 / 3 of abdomen width. Postepigastric scutum rectangular, not fused to epigastric scutum, with short posteriorly directed lateral apodemes (a) (Fig. 2 D). Genitalia: the posterior margin of the epigastric scutum is lined with numerous needle-like setae; at the middle of the anterior edge of the postepigastric scutum runs a dark, strongly winding tube posteriorly (wt), ending in a large bell-shaped atrium (bsa) (Figs 2 C, D, H, I).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9FFFA5F6BCF39FFD35D998.taxon	distribution	Distribution: Known only from Hainan Island.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFA0F6BCF2CCFD35DB74.taxon	materials_examined	Type material: 1 male Holotype (IZCAS Ar 19319), sifting leaf litter, China: Hainan, Haikou City, Dongzhaigang Mangrove Natural Reserve, Alt. - 2 m, 19 ° 57.113´N, 110 ° 33.983´E, August 20, 2007, leg. Shuqiang Li; 3 female paratypes, same data as holotype.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFA0F6BCF2CCFD35DB74.taxon	etymology	Etymology: The specific name refers to the strong thorn-like process on the chelicerae; adjective.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFA0F6BCF2CCFD35DB74.taxon	diagnosis	Diagnosis: The male can easily be recognized by the flower-like distal part of the palp and the very strong, curved, thorn-like process on the chelicerae (Figs 3 D, H, 5 C). The female can be recognized by the shallow, semicircular depression at the anterior margin of the postepigastric scutum and the sponge-like structure in the genital area (Figs 4 G, H, 5 D, E).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFA0F6BCF2CCFD35DB74.taxon	description	Description: Male (holotype). Total length 1.21 mm. Carapace: orange-brown, without any pattern, broadly oval in dorsal view, pars cephalica slightly elevated in lateral view, surface and sides strongly reticulate. Eyes: six, well developed, ALE largest, PME smallest; posterior eye row procurved from both above and front. Mouthparts: chelicerae slightly divergent, with slightly sclerotized process at base of fangs (ssp) and one strong, curved thornlike process (tlp) in the middle of the laterodorsal surface; fang groove with many small denticles (Figs 3 H, 5 C). Anterior margin of labium not indented at middle. Anteromedian tip of endites with one strong, tooth-like projection. Abdomen: scutum extending far dorsal of pedicel. Dorsal scutum covering about 3 / 4 of abdomen, about 1 / 2 of abdomen width, not fused to epigastric scutum. Epigastric scutum weakly sclerotized, postepigastric scutum absent. Leg spine formula: femur I with 2 prolateral and 1 small retrolateral spine, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Spination of leg II similar to leg I except femur with only one prolateral spine. Legs III and IV spineless. Genitalia: Sperm pore situated at level of anterior spiracles. Palp strongly sclerotized, trochanter with ventral projection (vp); femur normal size; patella about as long as femur, not enlarged; cymbium not fused with bulb; bulb with two small ventral protuberances (vpr), at the bending site with a lobe (l); tip of bulb with membranous, flower-like outgrowth (flo) (Figs 3 I, J, 5 A, B). Female (paratype). Total length 1.32 mm. As in male except as noted. Eyes: posterior eye row strongly procurved from above. Mouthparts: chelicerae and endites unmodified. Abdomen: dorsal scutum covering about 1 / 2 of abdomen, about 1 / 3 of abdomen width. Postepigastric scutum absent, with short posteriorly directed lateral apodemes. Genitalia: anterior margin of postepigastric scutum with a shallow semi-circular depression (scd), at its middle a tube, with round tip (rt), connected posteriorly to a strongly winding tube (wt); from dorsal view, the tube penetrates through a sponge-like structure (sls), and ends at near the epigastric furrow (Figs 4 G, H, 5 D, E).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFA0F6BCF2CCFD35DB74.taxon	distribution	Distribution: Known only from Hainan Island.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFAEF6BCF705FD35DED1.taxon	materials_examined	Type material: 1 male Holotype (IZCAS Ar 19320), canopy fogging, China: Hainan, Ledong, Jianfengling Natural Reserve, Alt. 997 m, 18 ° 44.658´N, 108 ° 50.435´E, August 18, 2010, leg. Guo Zheng; 2 males and 1 female paratypes (IZCAS Ar 19320), same data as holotype; 1 female paratype (IZCAS Ar 19321), canopy fogging, China: Hainan, Ledong, Jianfengling Natural Reserve, on the road to Fifth subarea, Alt. 975 m, 18 ° 44.026´N, 108 ° 52.460´E, August 15, 2010, leg. Guo Zheng; 1 female paratype (IZCAS Ar 19322), canopy fogging, China: Hainan, Ledong, Jianfengling Natural Reserve, on the road to Fifth subarea, August 14, 2010, leg. Guo Zheng; 1 female paratype (IZCAS Ar 19335), canopy fogging, Diaoluoshan Natural Reserve, on the road to waterfall, August 10, 2010, leg. Guo Zheng.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFAEF6BCF705FD35DED1.taxon	etymology	Etymology: The specific name is a patronym honoring Professor Yajun Xu, who worked on the Oonopidae of China.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFAEF6BCF705FD35DED1.taxon	diagnosis	Diagnosis: The new species is similar to I. falcatus Tong & Li, 2008, but can be distinguished by the larger dorsal scutum, the membranous outgrowth on the male palpal bulb, the modifications on the male chelicerae and the shape of the atrium.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFAEF6BCF705FD35DED1.taxon	description	Description: Male (holotype). Total length 1.45 mm. Carapace: orange-brown, with brown egg-shaped patches behind eyes, oval in dorsal view, pars cephalica strongly elevated in lateral view, surface and sides strongly reticulate. Eyes: six, in one group, well developed, ALE largest, PME and PLE nearly equal sized; posterior eye row straight from above, procurved from front. Mouthparts: chelicerae slightly divergent, with slightly sclerotized process at base of fangs (ssp); fang groove with a few small and two larger denticles (Figs 6 G, 8 C). Anterior margin of labium not indented at middle. Anteromedian tip of endites with one strong, tooth-like projection. Abdomen: ovoid, rounded posteriorly. Posterior spiracles not connected by groove. Pedicel tube short, unmodified, scutum extending far dorsal of pedicel. Dorsal scutum covering about 4 / 5 of abdomen, about equal to the abdomen width, not fused to epigastric scutum. Epigastric and postepigastric scutum well sclerotized, pale orange, fused. Leg spine formula: femur I with 2 prolateral and 1 small retrolateral spine, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Spination of leg II similar to leg I except femur with only one prolateral spine. Legs III and IV spineless. Genitalia: Sperm pore situated at level of anterior spiracles. Palp strongly sclerotized, trochanter with ventral projection (vp); patella as long as femur; cymbium brown, not fused with bulb, bulb brown, about 1.5 times as long as cymbium, stout, tapering apically, with two ventral protuberances (vpr), at the bending site with a small lobe (l), distal part of bulb with membranous outgrowth (mo) (Figs 6 E, F, 8 A, B) Female (paratype). Total length 1.79 mm. As in male except as noted. Carapace broadly oval in dorsal view. Mouthparts: chelicerae and endites unmodified. Abdomen: dorsal scutum covering about 1 / 2 of abdomen, about 2 / 3 of abdomen width. Postepigastric scutum not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Genitalia: in the middle of the postepigastric scutum is a sclerotized ridge visible (sr), underneath runs a strongly winding tube (wt), ending in a small atrium (atr). A curved sclerotized ridge (csr) is visible in the middle of the epigastric scutum when viewed from dorsal (Figs 7 G, 8 E, F).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF9AFFAEF6BCF705FD35DED1.taxon	distribution	Distribution: Known only from Hainan Island.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF94FFA9F6BCF57DFD35DA02.taxon	materials_examined	Type material: 1 male Holotype (IZCAS Ar 19332), sifting leaf litter, China: Hainan, Limushan Natural Reserve, Qulinggulin Garden, July 12, 2007, leg. Chunxia Wang; 1 female Paratype (IZCAS Ar 19341), China: Hainan, Limushan Natural Reserve, Old Botanical Garden, May 3, 2011, leg. Yuanye Zhou; 1 female paratype (IZCAS Ar 19342), China: Wuzhishan Natural Reserve, August 8, 2007, leg. Shuqiang Li.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF94FFA9F6BCF57DFD35DA02.taxon	etymology	Etymology: The species is named after miss Yuanye Zhou, who collected the type specimens.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF94FFA9F6BCF57DFD35DA02.taxon	diagnosis	Diagnosis: The new species is similar to I. matang Kranz-Baltensperger, 2011, but can be distinguished by the shape of the atrium (Figs 10 D, E), the small ventral lobe on the male palpal bulb and the prominent process at the base of the male cheliceral fangs (Figs 10 F – H).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF94FFA9F6BCF57DFD35DA02.taxon	description	Description: Male (holotype). Total length 1.48 mm. Carapace: pale orange on dorsal surface, brown on sides, with egg-shaped patches behind eyes, oval in dorsal view, pars cephalica strongly elevated in lateral view, dorsal surface smooth, sides finely reticulate. Eyes: six, in one group, well developed, ALE largest, PME and PLE nearly equal sized; posterior eye row straight from above, procurved from front. Mouthparts: chelicerae slightly divergent, with slightly sclerotized process at base of fangs (ssp); fang groove with a few small and one larger denticle (Figs 10 C, H). Anterior margin of labium not indented at middle. Anteromedian tip of endites with one strong, tooth-like projection. Abdomen: Posterior spiracles not connected by groove. Pedicel tube short, unmodified, scutum extending far dorsal of pedicel. Dorsal scutum covering about 1 / 2 of abdomen, about 1 / 3 abdomen width, not fused to epigastric scutum. Epigastric and postepigastric scutum weakly sclerotized, pale orange, fused. Leg spine formula: femur I with 2 prolateral and 1 small retrolateral spine, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Spination of leg II similar to leg I except femur with only one prolateral spine. Legs III and IV spineless. Genitalia: Sperm pore situated at level of anterior spiracles. Palp strongly sclerotized, trochanter with ventral projection (vp); patella as long as femur, not enlarged; cymbium brown, not fused with bulb, bulb brown, about 2 times as long as cymbium, stout, tapering apically, with two ventral protuberance (vpr), at the bending site with a small lobe (Figs 10 A, B, F, G). Female (paratype). Total length 1.58 mm. As in male except as noted. Carapace: without any pattern, pars cephalica slightly elevated in lateral view. Mouthparts: chelicerae and endites unmodified. Abdomen: dorsal scutum very small. Postepigastric scutum not fused to epigastric scutum, without short posteriorly directed lateral apodemes. Genitalia: the posterior margin of the epigastric scutum is lined with numerous needle-like setae; in the middle of the anterior margin of the postepigastric scutum runs a strongly winding tube (wt), ending in boat-shaped atrium (atr) (Figs 10 D, E, I, J).	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
039187EAFF94FFA9F6BCF57DFD35DA02.taxon	distribution	Distribution: Known only from Hainan Island.	en	Tong, Yanfeng, Li, Shuqiang (2012): Four new species of the genus Ischnothyreus from Hainan Island, China (Araneae, Oonopidae). Zootaxa 3352: 25-39, DOI: 10.5281/zenodo.215355
