Review of the spider genus Ectatosticta Simon, 1892 (Araneae: Hypochilidae) with description of four new species from China Author Wang, Lu-Yu 0000-0002-5250-3473 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China. & wangluyu 1989 @ 163. com; https: // orcid. org / 0000 - 0002 - 5250 - 3473 Author Zhao, Jing-Xia 0000-0002-4344-0300 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China. & 1131732591 @ qq. com; https: // orcid. org / 0000 - 0002 - 4344 - 0300 1131732591@qq.com Author Irfan, Muhammad 0000-0003-0445-9612 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China. & irfanuos 94 @ yahoo. com; https: // orcid. org / 0000 - 0003 - 0445 - 9612 irfanuos94@yahoo.com Author Zhang, Zhi-Sheng Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China. text Zootaxa 2021 2021-08-09 5016 4 523 542 journal article 10.11646/zootaxa.5016.4.4 1175-5326 5222521 424B59DE-70C5-493F-B8A6-EBEE50813E0B Ectatosticta deltshevi Platnick & Jäger, 2009 Figures 1F , 7A–C , 15C , 16C , 17D , 19 Ectatosticta davidi : Li & Zhu 1984: 510 , figs a–g ( ♂ ♀ ); Forster, Platnick & Gray 1987: 23 , figs 6–16, 18–20, 23–24, 31–36, 78–82 ( ♂ ♀ ); Song, Zhu & Chen 1999: 41 , figs 11D, 17Q– T ( ♂ ♀ ) ; Hu 2001: 69 , figs 1.1–6 ( ♂ ♀ ); Song, Zhu & Chen 2001: 64 , figs 24A–E ( ♂ ♀ ). Ectatosticta deltshevi Platnick & Jäger, 2009: 214 ; Lin & Li 2020: 20 , figs 1, 2B, 3B, 4B, 5B, 6A–C, 7A–B ( ♂ ♀ ). Material examined. 1 male and 1 female , China , Qinghai Province , Huangyuan County , 10 September 1983 , Z.S. Li leg. ; 12 females , Huangyuan County , 36°40′50″ N , 101°15′37″ E , elev. 2620 m , 26 July 2018 , L.Y. Wang and Y.N. Mu leg. FIGURE 5. Ectatosticta bajie Lin & Li, 2021 . A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view. FIGURE 6. Ectatosticta davidi ( Simon, 1889 ) . A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view. Abbreviations: CL, cymbial lobe; Co, conductor; Em, embolus; TS, thickened setae. Diagnosis. Male of this species resembles E. rulai Lin & Li, 2021 ( Figs 10A–C , 15F–G , 16F–G ) in having two strong setae on cymbial lobe, but differs from the latter by the short embolic base and the thin conductor ( Figs 7A–C , 15C , 16C ). Female of this species resembles E. yukuni Lin & Li, 2021 ( Fig. 18F ) in having two pairs of spermathecae, and ventral spermathecae two times longer than dorsal spermathecae, but differs from the latter by the strong ventral spermathecae ( Fig. 17D ). Description. See Forster, Platnick & Gray (1987) as E. davidi . Habitus, male palp and female genitalia as in Figs 1F , 7A–C , 15C , 16C , 17D . Distribution. China ( Qinghai ) ( Fig. 19 ).