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

http://doi.org/ 10.5281/zenodo.194981

persistent identifier

http://treatment.plazi.org/id/954B87D8-BE15-FF9A-9FAB-F9A43EDFE310

treatment provided by

Plazi

scientific name

Coelotes forficatus
status

sp. nov.

Coelotes forficatus  sp. nov.

Figs 1–5View FIGURE 1View FIGURE 2View FIGURE 3View FIGURES 4View FIGURE 5 and 21View 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 (21 º 54.607 ’N, 101 º 17.005 ’E, Alt: 633m), 10 October 2006, Guo ZHENG leg.; 2 female paratypes, Menglun Town, Primary tropical seasonal rain forest (21 º 57.445 ’N, 101 º 12.997 ’E, Alt: 744m), 24 December 2006, Guo ZHENG leg.; 1 female paratype, Menglun Town, Secondary tropical seasonal rain forest (21 º 55.428 ’N, 101 º 16.441 ’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 2View FIGURE 2 A, 3 B), large and curved conductor dorsal apophysis ( Figs 1View FIGURE 1 B, 4 B), round median apophysis ( Figs 1View FIGURE 1 B, 4 B), similar atrium and simple spermathecae in female ( Figs 2View FIGURE 2 B –C, 5 B –C). But can be distinguished from the latter by the short conductor ( Figs 2View FIGURE 2 A, 3 B), the stout patellar apophysis ( Figs 2View FIGURE 2 A, 3 B), the absence of lateral tibial apophysis, the relatively long cymbial furrow in male ( Figs 1View FIGURE 1 B, 4 B), by the strongly curved anterior margin of epigynal atrium, the inversely U –shape copulatory ducts and the broad spermathecal heads in female ( Figs 2View FIGURE 2 B –C, 5 B –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. 1View FIGURE 1 C). Patellar apophysis stout, with a small distal branch ( Figs 2View FIGURE 2 A, 3 B); RTA with distal end slightly extending beyond tibia ( Figs 1View FIGURE 1 B, 4 B); lateral tibial apophysis absent ( Figs 1View FIGURE 1 B, 4 B); cymbial furrow slightly less than half of cymbial length ( Figs 1View FIGURE 1 B, 4 B); conductor simple and short, conductor dorsal apophysis large, curving and forming a scissor –shaped with the distal conductor ( Figs 2View FIGURE 2 A, 3 B); median apophysis broad and round ( Figs 1View FIGURE 1 B, 4 B); the line between tegulum sclerite and embolic base indistinct ( Figs 2View FIGURE 2 A, 3 B); embolus filiform, originating prolaterally ( Figs 2View FIGURE 2 A, 3 B).

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 2View FIGURE 2 B, 5 B); atrium long, shallow ( Figs 2View FIGURE 2 B, 5 B); copulatory ducts inversely U –shape ( Figs 2View FIGURE 2 C, 5 C); spermathecal heads short and broad, situated anteriorly, widely separated ( Figs 2View FIGURE 2 C, 5 C); spermathecae simple, large and slightly separated ( Figs 2View FIGURE 2 C, 5 C).

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

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Amaurobiidae

Genus

Coelotes