Sinopoda nuda, Liu, Jie, Li, Shuqiang & Jäger, Peter, 2008

Liu, Jie, Li, Shuqiang & Jäger, Peter, 2008, New cave-dwelling huntsman spider species of the genus Sinopoda (Araneae: Sparassidae) from southern China, Zootaxa 1857, pp. 1-20 : 9-11

Sinopoda nuda sp. nov.

Figs 5A–F , 10A–D and 12

Type material: Holotype male, 5 females (all IZCAS) and 2 females ( SMF) paratypes, CHINA: Guizhou Province, Suiyang County, Wenquan Town, Hejiaodong Cave (28º14.704’N, 107º17.304’E, Alt: 695m, T: 15°C, H: 90%), 12 May 2007, Yucheng Lin, Jie Liu leg; 1 male, 7 female (all IZCAS) paratypes, CHINA: Guizhou Province, Suiyang County, Wenquan Town, Shanwangdong Cave (28º14.724’N, 107º17.312’E, Alt: 765m, T: 14°C, H: 94%), 13 May 2007, Yucheng Lin, Jie Liu leg.

Etymology: The specific name is derived from the Latin nudus, -a, -um, meaning “nude, simple, umarmed”, referring to the simple embolus of this new species that lacks the apophysis characteristic for representative of the genus Sinopoda ; adjective.

Diagnosis: Based on the absence of the embolic apophysis and the presence of a distinct brush of stiff setae at the base of the RTA, this new species belongs to the Sinopoda okinawana -group, but it can be separated from other okinawana -group species by the developed ventral RTA ( Figs 5A–D ). Moreover, the shape of the basal embolus is not semicircular as in S. albofasciata Jäger & Ono 2002 or S. derivata Jäger & Ono 2002 , but exhibits a distinct bend in S. nuda sp. nov. The female is similar to Sinopoda longshan in the shape of epigynal pockets and dorsad tips of posterior spermathecae, but can be distinguished by the following differences: 1. median part of epigyne wider in the new species (narrow in S. longshan ); 2. anterior appendices of the internal duct system distinctly shorter in the new species (longer in S. longshan ; Figs 4A–B , 5E–F ).

Description: Male (holotype). Measurements (in mm): PL 6.7, PW 6.0, AW 2.8, PH 5.2, OL 8.2, OW 4.5. Eyes: AME 0.31, ALE 0.48, PME 0.40, PLE 0.64, AME–AME 0.13, AME–ALE 0.09, PME–PME 0.27, PME–PLE 0.12, AME–PME 0.28, ALE–PLE 0.08, CH AME 0.31, CH ALE 0.40. Leg and palp measurements: Pp 13.1 (4.8, 2.2, 3.0, -, 3.1), I 49.4 (12.7, 3.9, 13.9, 15.2, 3.7), II 54.2 (14.2, 4.2, 15.5, 16.4, 3.9), III 42.2 (11.5, 3.6, 11.6, 11.9, 3.6), IV 43.4 (12.2, 3.4, 12.5, 11.9, 3.4). Leg formula: II-I-IV-III. Spination: Pp 131, 101, 1210; Fe 323; Pa 101; Ti 2326; Mt I–II 1014, III 2026, IV 3036.

Palp as in diagnosis. Embolus long and slender, proximal part of embolus narrow and entirely visible. Embolic apophysis absent. Sperm duct slightly curved in ventral view. Dorsal RTA slender and blunt, distinctly curved in retrolateral view; ventral RTA well developed and stout from retrolateral view. Both palpal tarsus and tibia elongated, cymbium slightly longer than tibia ( Figs 5A–D ).

Female (paratype from Hejiaodong Cave). Measurements (in mm): PL 6.7, PW 5.7, AW 3.4, PH 5.5, OL 9.0, OW 4.6. Eyes: AME 0.32, ALE 0.63, PME 0.42, PLE 0.56, AME–AME 0.07, AME–ALE 0.09, PME–PME 0.30, PME–PLE 0.26, AME–PME 0.32, ALE–PLE 0.19, CH AME 0.32, CH ALE 0.39. Leg and palp measurements: Pp 11.5 (3.9, 1.8, 2.4, -, 3.4), I 35.7 (9.9, 3.6, 10.0, 9.6, 2.7), II 38.7 (10.9, 3.9, 11.0, 10.1, 2.7), III 31.9 (9.6, 3.3, 9.0, 7.6, 2.5), IV 34.5 (10.0, 3.1, 9.6, 8.8, 3.0). Leg formula: II-I-IV-III. Spination: Pp 131, 101, 2121, 1014; Fe 323; Pa 101; Ti I 2126, II–IV 2226; Mt I–II 1014, III 3034, IV 3036.

Copulatory organ as in diagnosis. Median part of epigyne broad, diverging posteriorly. Posterior margin of epigyne distinctly bilobate. Anterior part of internal duct system with distinctly bilobate appendix; posterior part wider than anterior part, tips of the posterior spermathecae bent considerably ( Figs 5E–F ).

Distribution: China (Guizhou) ( Fig. 12 ).

Figures

FIGURE 12. Collection localities of nine new Sinopoda species, described in this paper.

FIGURES 5 A – F. Sinopoda nuda sp. nov., holotype (A – D), paratype from Hejiaodong Cave (E – F). A. Left male palp, prolateral view; B. Same, ventral view; C. Same, retrolateral view; D. Left male palpal tibia, dorsal view; E. Epigyne, ventral view; F. Vulva, dorsal view. Scale lines: 0.2 mm.

FIGURES 10 A – L. A – D. Sinopoda nuda sp. nov. (A – B. Male holotype, C – D. Female paratype from Hejiaodong Cave); E – H. Sinopoda semicirculata sp. nov. (E – F. Male holotype, G – H. Female paratype); I – L. Sinopoda triangula sp. nov. (I – J. Male holotype, K – L. Female paratype) (A, C, E, G, I, K, dorsal view; B, D, F, H, J, L, ventral view.). Scale lines: 3 mm.

FIGURES 4 A – B. Sinopoda longshan Yin, Peng, Yan & Bao 2000, holotype. A. Epigyne, ventral view; B. Vulva, dorsal view. Scale lines: 0.2 mm.