Troglocoelotes gen. n., a new genus of Coelotinae spiders (Araneae, Agelenidae) from caves in South China Author Li, Bing Author Zhao, Zhe Author Zhang, Chuntian Author Li, Shuqiang text Zootaxa 2019 2019-02-08 4554 1 219 238 journal article 27576 10.11646/zootaxa.4554.1.7 94cdd5b4-1428-46bc-ae1b-cea7e0976cfb 1175-5326 2623528 18AB16FA-399B-4A34-8811-B199C39F395D Genus Troglocoelotes Z. Zhao & S. Li gen. n. ( Figs 1–15 ) Type species. Troglocoelotes yumiganen sis Z. Zhao & S. Li gen. n. Etymology. The generic name refers to the cave habitat and coelotine spiders. The gender is masculine. Diagnosis. Troglocoelotes is closely related to Guilotes Z. Zhao & S. Li 2018 based on the copulatory organs morphology but can be distinguished by having 3 promarginal and 2 retromarginal teeth ( Fig. 1D ) vs . with 5–6 promarginal and 5 retromarginal teeth in Guilotes , eyes reduced ( Fig. 1A ) or absent ( Fig. 1B ) vs . normal in Guilotes ( Fig. 1C ); male palp: median apophysis slice-shaped and with a bent tip ( Figs 5 B–C, 8B–C, 10B–C, 12B– C) vs . spoon-shaped, cymbium not suddenly narrowing ( Figs 5C , 8C , 10C , 12C ), conductor without outgrowth, tegulum and bulbus not intumescent as in Guilotes ( Figs 5A , 8A , 10A , 12A ); epigyne: epigynal teeth located anteriorly ( Fig. 1 E–F) or medially ( Figs 7A , 9A ) vs . posteriorly, spermathecae ellipsoidal, anterior parts specialized, coiled by copulatory ducts, slender and long ( Fig. 1 G–H) vs . spermathecae long and heads fused with copulatory ducts. FIGURE 1. Characters of Troglocoelotes gen. n. A–B, D–H (A. All eyes absent; B. Eyes reduced to white spots; D. Promarginal and retromarginal teeth of chelicerae; E–F. Epigyne, ventral view; G–H. Epigyne, dorsal view). C. Eyes in Guilotes qingshitanensis Zhao & Li 2018 . Description. Small to medium sized with a total length between 3.83–9.28. Coloration: carapace and chelicerae brown; abdomen and spinnerets pale; legs yellowish or pale. Prosoma, posterior radial furrows and both sides of fovea, and chelicerae covered with hairs. Chelicerae with 3 promarginal and 2 retromarginal teeth. Eyes reduced or absent. Legs without black annular striations, leg formula 4123. Abdomen covered with hairs, with cardiac pattern in the most species, without any other marks. Spinnerets: the proximal segment is as long as the basal segment. Male palp: patellar apophysis long in the most species ( Figs 8 B–C, 12B–C), but short in T. liangensis ( Fig. 5 B–C), wide at base in T. tortus ( Fig. 10 B–C); VTA wide and short (the tip just over patellar tibia) ( Fig. 5 B–C); RTA about 1/2 the length of VTA ( Figs 5C , 8C , 10C , 12C ); cymbial furrow in most species long ( Figs 5C , 8C , 10C ), about 1/2 the length of cymbium in T. yumiganensis ( Fig. 12C ); embolus filiform, beginning at 6 to 7 o’clock position ( Figs 5 A–C, 8A–C, 10A–C, 12A–C); conductor simple but in most species with a blunt dorsal apophysis ( Figs 8 B–C, 10B–C) and a lamella ( Figs 5B , 10B , 12B ); median apophysis slice-shaped with bent tip ( Figs 5 B–C, 8B–C, 10B–C, 12B–C). Epigyne: atrium small ( Figs 3A , 4A , 6A , 7A , 9A , 11A , 13A ); epigynal teeth vary in shape but point medially in the most species ( Figs 3A , 4A , 6A , 7A , 9A , 13A ); hoods absent; copulatory ducts long and semi-transparent with light color, spermathecae ellipsoidal with dark color, anterior parts specialized, coiled by copulatory ducts, slender and long ( Figs 3B , 4B , 6B , 7B , 9B , 11B , 13B ). Natural history. All species of Troglocoelotes gen. n. were collected from the deep zone of moist and dark caves ( Fig. 15 ). Characteristics like reduced eyes and pale body coloration indicate they are true troglobionts. Distribution. Guizhou and Guangxi , China ( Fig. 14 ). Comments. The relationships of coelotine spiders were recently analyzed using 8 genes from 286 species in 19 genera ( Zhao & Li 2017 ). The molecular topologies supported Troglocoelotes as a new genus and suggested that Guilotes is the sister-group ( Fig. 2 ).