First description of comb-tailed spiders (Araneae: Hahniidae) from Vietnam Author Zhang, Zhi-Sheng Author Li, Shuqiang Author Pham, Dinh-Sac text Zootaxa 2013 3613 4 343 356 journal article 10.11646/zootaxa.3613.4.2 6616e1cb-3ad6-4aa4-9f18-ecdf2fb575c7 1175-5326 218582 E4301118-3B78-4431-B1DD-54639B472A2B Hahnia rimiformis sp. nov. Figs 4A–F , 5A–G , 6A–G Type material. Holotype : male, VIETNAM , NINH BINH PROVINCE, Cuc Phuong National Park, natural forest, pitfall traps, 1–30.X.2007 . Paratypes ( 57 males , 27 females ): 26 males , 1 female , same data as holotype ; 1 male , 2 females , same data as holotype but: 1–30.VI.2007 ; 1 female , same data as holotype but: 1–30.VII.2007 ; 28 males , same data as holotype but: 1–30.VIII.2007 ; 2 males , 23 females , same data as holotype but: 1–30.XI.2007 . Etymology. The specific name is taken from the Latin word “ rimiformis ”, meaning split-like and referring to the shape of the epigynal atrium, adjective. FIGURES 4A–F. Hahnia rimiformis sp. nov. , holotype male (A – C) and paratype female (D – F). A. Left palp, ventral view; B. Same, retrolateral view; C. Same, dorsal view; D. Epigyne, ventral view (atrium elevated); E. Epigyne, ventral view (atrium degraded backwards); F. Vulva, dorsal view. At = atrium; CD = copulatory duct; CF = cymbial furrow; Em = embolus; FD = fertilization duct; Ho = hood; MA = median apophysis; PA = patellar apophysis; RTA = retrolateral tibial apophysis; Sp = spermatheca; SS = subspermatheca. FIGURES 5A–G. Hahnia rimiformis sp. nov. , holotype male. A. Male habitus, dorsal view; B. Same, ventral view; C. Eyes and chelicerae, frontal view; D. Stridulatory files on the lateral chelicerae; E. Left palp, ventral view; F. Same, retrolateral view; G. Same, dorsal view. Diagnosis. The new species is similar to H. himalayaensis ( Figs 3A–E ) in having tegular setae and long copulatory ducts, but differs from the latter by the smaller number of setae and the long cymbial furrow; and a splitlike epigynal atrium, the small subspermathecae far away from spermathecae ( Figs 4A–B, 4D, 4F ). Description. Male holotype ( Figs 5A–D ): Total length 2.25. Prosoma 1.13 long, 0.83 wide; opisthosoma 1.25 long, 0.82 wide. Eye sizes and interdistances: AME 0.05, ALE 0.09, PME 0.07, PLE 0.08; AME–AME 0.03, AME–ALE 0.01, PME–PME 0.05, PME–PLE 0.03, ALE–PLE 0.02. MOA 0.17 long, front width 0.12, back width 0.19. Clypeus height 0.12. Leg measurements: I 3.61 (1.02, 1.20, 0.80, 0.59); II 3.35 (0.94, 1.07, 0.75, 0.59); III 3.11 (0.85, 0.95, 0.78, 0.53); IV 3.78 (1.01, 1.24, 0.96, 0.67). Leg formula: 4123. Chelicerae with 3 promarginal and 5 retromarginal teeth. Male palp ( Figs 4A–C , 5E–G ) with a sheet-like, hooked patellar apophysis and a long and curved RTA. Another protuberance present on the dorsal margin of retrolateral side of tibia. Embolus long, retrolateralproximally originated and its tip lying in the cymbial furrow. Median apophysis membranous, originating retrolaterally. Cymbial furrow long and deep. One of female paratypes ( Figs 6A–B ) total length 2.34. Prosoma 1.67 long, 0.81 wide; opisthosoma 1.29 long, 0.94 wide. Eye sizes and interdistances: AME 0.05, ALE 0.07, PME 0.07, PLE 0.09; AME–AME 0.04, AME–ALE 0.02, PME–PME 0.06, PME–PLE 0.05, ALE–PLE 0.03. MOA 0.18 long, front width 0.13, back width 0.21. Clypeus height 0.12. Leg measurements: I 3.15 (0.94, 1.11, 0.56, 0.54); II 2.99 (0.89, 0.97, 0.62, 0.51); III 2.77 (0.77, 0.86, 0.63, 0.51); IV 3.68 (1.05, 1.18, 0.86, 0.59). Chelicerae with 3 promarginal and 5–6 retromarginal teeth (some other female paratypes with 3–4 promarginal and 5–6 retromarginal ones). Other characters similar to the male holotype . FIGURES 6A–G. Hahnia rimiformis sp. nov. , female paratypes (C, F and G based on the same specimen). A. Female habitus, dorsal view; B. Chelicerae, ventral view; C–D, Epigyne, ventral view (undissected, atrium elevated); E–F. Epigyne, ventral view (dissected, atrium degraded backwards); G. Vulva, dorsal view. Epigyne with an elevated, split-like atrium ( Figs 4D , 6C–D ) near the epigastric furrow. Atrium pit-like if degraded backwards ( Figs 4E , 6E–F ). Copulatory ducts slender and strongly curved. Subspermathece slightly inflated and located anteriorly. Spermathecae located posteriorly, widely separated from each other ( Figs 4F , 6G ). A pair of epigynal hoods can be located behind of the epigastric furrow, their distance wider than twice of the width of copulatory openings ( Fig. 4D ). Distribution. Vietnam (Ninh Binh).