A review of Crassignatha (Araneae, Symphytognathidae) Author Li, Ya Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China & The Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Sichuan University, Chengdu, Sichuan 610064, China https://orcid.org/0000-0002-9558-4154 Author Lin, Yucheng Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China & The Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Sichuan University, Chengdu, Sichuan 610064, China linyucheng@scu.edu.cn Author Li, Shuqiang Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China https://orcid.org/0000-0002-3290-5416 lisq@ioz.ac.cn text ZooKeys 2020 988 63 128 http://dx.doi.org/10.3897/zookeys.988.56188 journal article http://dx.doi.org/10.3897/zookeys.988.56188 1313-2970-988-63 6E64D69BDD734A7EAE2B3CD21247A5E3 D5BC323AA5F05894AE8FBB10A3F0960D Crassignatha quanqu Miller, Griswold & Yin, 2009 Figs 22 , 23 , 38 Crassignatha quanqu Miller et al., 2009 : 72, figs 76E-G, 78F, 79E, F, 83A-E, 84A, B, 85A-F (♂♀). Type material. Holotype ♂ (HNU-CASENT 9029323) and paratypes 1♂ 1♀ (HNU-CASENT 9022388), China : Yunnan Province, Longling County, Zhen'an Township, Bangbie Village, at stream at km 6.8 on Route S317, shady embankments along stream, dusting webs in understory ( 24.81333°N , 98.83280°E , 1552.5 +/- 7.5 m), 24.V.2005, C. Griswold leg. Examined. Figure 22. Crassignatha quanqu A male habitus, dorsal B male habitus, ventral C male habitus, lateral D female prosoma, dorsal E female prosoma, ventral F female abdomen, dorsal G female abdomen, ventral. Scale bars: 0.50 mm ( A-G ). Diagnosis. The male of Crassignatha quanqu is similar to C. gucheng sp. nov. but can be distinguished by the median apophysis with two tapered distal processes and the details of the palp (Fig. 23A-C vs. Fig. 10A-C ). The female of C. quanqu is similar to C. yinzhi and C. thamphra sp. nov. in the vulva configuration, but differs by the nearly vertical connection of copulatory ducts and copulatory openings, rather than connected diagonally as in the latter two, and differs by the fertilization ducts starting at the posterior margin of the spermathecae, rather than the inside medial margin as in the latter two (Fig. 23D, E vs. Figs 32F, G , 37F, G ). Description. See Miller et al. (2009) . Distribution. China (Yunnan) (Fig. 38 ). Figure 23. Crassignatha quanqu A male palp, prolateral B male palp, ventral C male palp, retrolateral D vulva, ventral E vulva, dorsal. Scale bars: 0.10 mm ( A-E ).