Troglocoelotes Z. Zhao & S. Li, 2019

Li, Bing, Zhao, Zhe, Zhang, Chuntian & Li, Shuqiang, 2019, Troglocoelotes gen. n., a new genus of Coelotinae spiders (Araneae, Agelenidae) from caves in South China, Zootaxa 4554 (1), pp. 219-238 : 220-222

publication ID	https://doi.org/ 10.11646/zootaxa.4554.1.7
publication LSID	lsid:zoobank.org:pub:18AB16FA-399B-4A34-8811-B199C39F395D
DOI	https://doi.org/10.5281/zenodo.5943970
persistent identifier	https://treatment.plazi.org/id/098656F8-0A6C-4BC2-B26D-3A78A0996989
taxon LSID	lsid:zoobank.org:act:098656F8-0A6C-4BC2-B26D-3A78A0996989
treatment provided by	Plazi
scientific name	Troglocoelotes Z. Zhao & S. Li
status	gen. nov.

Treatment

Genus Troglocoelotes Z. Zhao & S. Li View in CoL gen. n.

( Figs 1–15 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 View FIGURE 14 View FIGURE 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 View FIGURE 1 ) vs. with 5–6 promarginal and 5 retromarginal teeth in Guilotes , eyes reduced ( Fig. 1A View FIGURE 1 ) or absent ( Fig. 1B View FIGURE 1 ) vs. normal in Guilotes ( Fig. 1C View FIGURE 1 ); male palp: median apophysis slice-shaped and with a bent tip ( Figs 5 View FIGURE 5 B–C, 8B–C, 10B–C, 12B– C) vs. spoon-shaped, cymbium not suddenly narrowing ( Figs 5C View FIGURE 5 , 8C View FIGURE 8 , 10C View FIGURE 10 , 12C View FIGURE 12 ), conductor without outgrowth, tegulum and bulbus not intumescent as in Guilotes ( Figs 5A View FIGURE 5 , 8A View FIGURE 8 , 10A View FIGURE 10 , 12A View FIGURE 12 ); epigyne: epigynal teeth located anteriorly ( Fig. 1 View FIGURE 1 E–F) or medially ( Figs 7A View FIGURE 7 , 9A View FIGURE 9 ) vs. posteriorly, spermathecae ellipsoidal, anterior parts specialized, coiled by copulatory ducts, slender and long ( Fig. 1 View FIGURE 1 G–H) vs. spermathecae long and heads fused with copulatory ducts.

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 View FIGURE 8 B–C, 12B–C), but short in T. liangensis ( Fig. 5 View FIGURE 5 B–C), wide at base in T. tortus ( Fig. 10 View FIGURE 10 B–C); VTA wide and short (the tip just over patellar tibia) ( Fig. 5 View FIGURE 5 B–C); RTA about 1/2 the length of VTA ( Figs 5C View FIGURE 5 , 8C View FIGURE 8 , 10C View FIGURE 10 , 12C View FIGURE 12 ); cymbial furrow in most species long ( Figs 5C View FIGURE 5 , 8C View FIGURE 8 , 10C View FIGURE 10 ), about 1/2 the length of cymbium in T. yumiganensis ( Fig. 12C View FIGURE 12 ); embolus filiform, beginning at 6 to 7 o’clock position ( Figs 5 View FIGURE 5 A–C, 8A–C, 10A–C, 12A–C); conductor simple but in most species with a blunt dorsal apophysis ( Figs 8 View FIGURE 8 B–C, 10B–C) and a lamella ( Figs 5B View FIGURE 5 , 10B View FIGURE 10 , 12B View FIGURE 12 ); median apophysis slice-shaped with bent tip ( Figs 5 View FIGURE 5 B–C, 8B–C, 10B–C, 12B–C). Epigyne: atrium small ( Figs 3A View FIGURE 3 , 4A View FIGURE 4 , 6A View FIGURE 6 , 7A View FIGURE 7 , 9A View FIGURE 9 , 11A View FIGURE 11 , 13A View FIGURE 13 ); epigynal teeth vary in shape but point medially in the most species ( Figs 3A View FIGURE 3 , 4A View FIGURE 4 , 6A View FIGURE 6 , 7A View FIGURE 7 , 9A View FIGURE 9 , 13A View FIGURE 13 ); 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 View FIGURE 3 , 4B View FIGURE 4 , 6B View FIGURE 6 , 7B View FIGURE 7 , 9B View FIGURE 9 , 11B View FIGURE 11 , 13B View FIGURE 13 ).

Natural history. All species of Troglocoelotes gen. n. were collected from the deep zone of moist and dark caves ( Fig. 15 View FIGURE 15 ). Characteristics like reduced eyes and pale body coloration indicate they are true troglobionts.

Distribution. Guizhou and Guangxi, China ( Fig. 14 View FIGURE 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 View FIGURE 2 ).