Pimoa binchuanensis, Zhang, Xiaoqing & Li, Shuqiang, 2019

Zhang, Xiaoqing & Li, Shuqiang, 2019, On three species of the spider genus Pimoa (Araneae, Pimoidae) from China, ZooKeys 855, pp. 1-13 : 3-4

Pimoa binchuanensis sp. nov. Figs 1, 2, 7

Type material.

Holotype ♂ (IZCAS-Ar39293): China: Yunnan: Dali Bai Autonomous Prefecture: Binchuan County: Jizushan Town, Mt. Jizu, 25.9667°N, 100.3746°E, 2568 ± 4 m, 25.III.2019, Z. Chen. Paratype: ♀ (IZCAS-Ar39294): same area, 25.9639°N, 100.3712°E, 2658 m, 1.XII.2014, Y. Li & Z. Chen.

Etymology.

The specific name refers to the type locality; adjective.

Diagnosis.

The male of P. binchuanensis sp. nov. can be easily distinguished from other congeners, except for P. anatolica Hormiga, 1994 and P. lihengae Griswold, Long & Hormiga, 1999, by having a long and complex cymbial sclerite (CS) and an elongate cymbial process (CP). From P. anatolica and P. lihengae , it can be distinguished by the long embolic process (EP), about 2 times longer than the embolus (vs embolic process shorter than embolus) (cf. Fig. 1 A–C; Griswold et al. 1999: figs 15-17; Xu and Li 2007: figs 4-8). The female of P. binchuanensis sp. nov. can be distinguished from other congeners by having a broad dorsal plate (DP) of the epigyne with an oval tip and trapezoidal basal part (vs dorsal plate narrow or indistinct) (Fig. 2A, B).

Description.

Male (holotype, IZCAS-Ar39293): Total length 5.25. Carapace 2.50 long, 2.00 wide. Abdomen 2.75 long, 1.75 wide. Eye sizes and interdistances: AME 0.20, ALE 0.16, PME 0.15, PLE 0.20; AME-AME 0.05, AME-ALE 0.05, PME-PME 0.10, PME-PLE 0.10. Leg measurements: I: missing; II: 17.00 (5.00, 5.25, 5.00, 1.75); III: 10.75 (3.25, 3.50, 3.00, 1.00); IV: missing. Promargin of chelicerae with 2 teeth, retromargin with 1 tooth. Carapace yellowish, with black lateral margins, the thoracic fovea and radial grooves distinct, sternum yellowish, nearly almond-shaped. Abdomen brownish with yellow transverse bands, nearly oval. Legs yellowish with black annulations. Palp: patella short, about 1/2 of tibial length; tibia long, about 1/2 of cymbial length; paracymbium short, about 1/3 of cymbial length, somewhat hook-shaped; cymbial sclerite (CS) long, about 1/2 of cymbial length, spindle-shaped; cymbial process (CP) broad and long, about 1/2 of cymbial length, with more than 20 cuspules; median apophysis (MA) indistinct; conductor distinct; embolic process (EP) long, about 1.5 times as long as embolus, tip with fine granulations; embolus bent and long, about the same length as the cymbium, beginning at the 7:30 o’clock position; embolic tooth absent (Fig. 1 A–C).

Female: (paratype, IZCAS-Ar39294): Total length 7.12. Carapace 3.16 long, 2.47 wide. Abdomen 3.96 long, 3.28 wide. Eye sizes and interdistances: AME 0.15, ALE 0.20, PME 0.17, PLE 0.17; AME-AME 0.14, AME-ALE 0.11, PME-PME 0.14, PME-PLE 0.22. Leg measurements: I: 19.78 (5.71, 6.86, 5.06, 2.15); II: 16.23 (4.94, 5.26, 4.23, 1.80); III: 11.47 (3.52, 3.56, 3.08, 1.31); IV: 15.64 (4.87, 5.13, 4.10, 1.54). Promargin and retromargin of chelicerae with 3 teeth. Carapace brownish, the thoracic fovea and radial grooves distinct, sternum yellowish, and shield-shaped. Abdomen greyish, somewhat oval, transverse bands indistinct. Legs brownish without annulations. Epigyne: triangular; ventral (VP) and dorsal plates (DP) broad, length subequal to width; copulatory openings hidden; spermathecae globose, separated by about half of the radius; fertilization ducts laterally oriented (Fig. 2).

Distribution.

Type locality only, Yunnan, China (Fig. 7).