Coelotes forficatus, Liu, Jie & Li, Shuqiang, 2010

Liu, Jie & Li, Shuqiang, 2010, New Coelotine spiders from Xishuangbanna Rainforest, Southwestern China (Araneae: Amaurobiidae), Zootaxa 2442, pp. 1-24 : 2-7

publication ID	https://doi.org/ 10.5281/zenodo.194981
DOI	https://doi.org/10.5281/zenodo.6200828
persistent identifier	https://treatment.plazi.org/id/954B87D8-BE15-FF9A-9FAB-F9A43EDFE310
treatment provided by	Plazi
scientific name	Coelotes forficatus
status	sp. nov.

Treatment

Coelotes forficatus sp. nov.

Figs 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURES 4 View FIGURE 5 and 21 View FIGURE 21

Type material: Holotype male, 2 female paratypes, CHINA: Yunnan Province, Xishuangbanna Dai Autonomous Prefecture, Mengla County, Menglun Town, Secondary tropical seasonal moist forest (21º54.607’N, 101º17.005’E, Alt: 633m), 10 October 2006, Guo ZHENG leg.; 2 female paratypes, Menglun Town, Primary tropical seasonal rain forest (21º57.445’N, 101º12.997’E, Alt: 744m), 24 December 2006, Guo ZHENG leg.; 1 female paratype, Menglun Town, Secondary tropical seasonal rain forest (21º55.428’N, 101º16.441’E, Alt: 598m), 24 December 2006, Guo ZHENG leg.

Etymology: The specific epithet is taken from the Latin adjective ‘ forficatus ’, referring to the forficiform (scissor–shaped) distal conductor and conductor dorsal apohysis; adjective.

Diagnosis: The new species is similar to Coelotes pseudoterrestris Schenkel, 1963 in having similar embolic base ( Figs 2 View FIGURE 2 A, 3B), large and curved conductor dorsal apophysis ( Figs 1 View FIGURE 1 B, 4B), round median apophysis ( Figs 1 View FIGURE 1 B, 4B), similar atrium and simple spermathecae in female ( Figs 2 View FIGURE 2 B–C, 5B–C). But can be distinguished from the latter by the short conductor ( Figs 2 View FIGURE 2 A, 3B), the stout patellar apophysis ( Figs 2 View FIGURE 2 A, 3B), the absence of lateral tibial apophysis, the relatively long cymbial furrow in male ( Figs 1 View FIGURE 1 B, 4B), by the strongly curved anterior margin of epigynal atrium, the inversely U–shape copulatory ducts and the broad spermathecal heads in female ( Figs 2 View FIGURE 2 B–C, 5B–C). These two species can be distinguished from other Coelotes species by the scissor–shaped distal conductor and conductor dorsal apohysis, by the simple spermathecae which are close to each other posterioly but separated anteriorly.

Description. Male (measurements of the holotype): Total length 8.45. Prosoma length 3.90, width 3; Opisthosoma length 4.55, width 2.70. Eye measurements: AME 0.35; ALE 0.50; PME 0.40; PLE 0.40; AME– AME 0.15; AME–ALE 0.05; ALE–PLE 0; PME–PME 0.10; PME–PLE 0.15. Eyes pale, AME slightly reduced. Clypeus height 0.40. Leg formula: IV, I, II, III; leg measurements: I: 17.50 (4. 35, 5.50, 4.75, 2.90); II: 15.25 (4.00, 4.60, 4.15, 2.50); III: 14.00 (3.75, 4.15, 4.00, 2.10); IV: 18.15 (4.65, 5.25, 5.60, 2.65). Chelicerae with three promarginal and five retromarginal teeth ( Fig. 1 View FIGURE 1 C). Patellar apophysis stout, with a small distal branch ( Figs 2 View FIGURE 2 A, 3B); RTA with distal end slightly extending beyond tibia ( Figs 1 View FIGURE 1 B, 4B); lateral tibial apophysis absent ( Figs 1 View FIGURE 1 B, 4B); cymbial furrow slightly less than half of cymbial length ( Figs 1 View FIGURE 1 B, 4B); conductor simple and short, conductor dorsal apophysis large, curving and forming a scissor–shaped with the distal conductor ( Figs 2 View FIGURE 2 A, 3B); median apophysis broad and round ( Figs 1 View FIGURE 1 B, 4B); the line between tegulum sclerite and embolic base indistinct ( Figs 2 View FIGURE 2 A, 3B); embolus filiform, originating prolaterally ( Figs 2 View FIGURE 2 A, 3B).

Female (measurements of one of paratype, another paratype in parentheses): Total length 13.00(14.00). Prosoma length 5.50(5.50), width 3.90(3.80); Opisthosoma length 7.50(8.50), width 4.65(6.25). Eye measurements: AME 0.40(0.38); ALE 0.60(0.55); PME 0.45; PLE 0.50; AME–AME 0.15; AME–ALE 0.15; ALE–PLE 0; PME–PME 0.20; PME–PLE 0.35. Clypeus height 0.65(0.60). Leg formula: IV, I, II, III; leg measurements: I: 17.50(17.40) [4.75(4.60), 5.85(5.85), 4.30(4.40), 2.60(2.55)]; II: 15.25(15.25) [4.30(4.25), 5.00(4.95), 3.80(3.80), 2.15(2.25)]; III: 14.55(14.10) [4.10(4.10), 4.60(4.25), 3.90(3.75), 1.95(2.00)]; IV: 18.15(19.05) [5.00(5.15), 5.50(5.90), 5.25(5.50), 2.40(2.50)]. Chelicerae with three promarginal and five retromarginal teeth. Epigynal teeth small, with sharp end, situated medially and laterally, widely separated ( Figs 2 View FIGURE 2 B, 5B); atrium long, shallow ( Figs 2 View FIGURE 2 B, 5B); copulatory ducts inversely U–shape ( Figs 2 View FIGURE 2 C, 5C); spermathecal heads short and broad, situated anteriorly, widely separated ( Figs 2 View FIGURE 2 C, 5C); spermathecae simple, large and slightly separated ( Figs 2 View FIGURE 2 C, 5C).

Distribution: Only known from Menglun Natural Reserve of Xishuangbanna Dai Autonomous Prefecture in Yunnan Province in China ( Fig. 21 View FIGURE 21 ).