Belisana yangi, Zhang, Feng & Peng, Yan-Qiu, 2011

Zhang, Feng & Peng, Yan-Qiu, 2011, Eleven new species of the genus Belisana Thorell (Araneae: Pholcidae) from South China, Zootaxa 2989, pp. 51-68 : 65-68

Belisana yangi sp. nov.

( Fig. 11 )

Type material. Holotype male, China: Yunnan Province, Guangnan County (24°03'N, 105°05'E), Babao Town, 24 July 2007, Zizhong Yang leg.; paratypes: 1Ƥ, same data as holotype.

Etymology. The specific name is a patronym in honor of the collector, Dr. Zizhong Yang.

Diagnosis. The new species strongly resembles B. wau Huber, 2005 , but can be distinguished by the shape of the procursus ( Fig. 11 D) and also by the shorter and narrower bulbal hooked apophysis ( Fig. 11 E).

Description. Male (holotype). Total length 1.79 (1.92 with clypeus), carapace length 0.67, width 0.65. Leg I: 7.06 (1.91 + 0.23 + 1.82 + 2.28 + 0.82), tibia II: 1.27, tibia III: 0.82, tibia IV: 1.37; tibia I L/d: 35. Habitus as in Fig. 11 A, carapace pale brown, with brown stripes radiated from center and connecting to ocular area; abdomen ochre-grey, with large spots dorsally and laterally. Ocular area not elevated, thoracic furrow absent. Clypeus brown, unmodified. Sternum nearly as long as wide (0.44). Chelicerae as in Figs 11 B–C, with pair of proximal rounded projections laterally, pair of small frontal apophyses proximocentrally, and distally a pair of curved apophyses with tips unmodified. Retrolateral trichobothrium of tibia I at 42%; legs brown without spines and curved hairs, with vertical hairs proximally on all metatarsi; tarsus I with 10 pseudosegments, quite distinct distally. Palps as in Figs 11 D–F, trochanter with short and rounded retrolateral apophysis; femur without hump; procursus complicated distally, with ventral membranous flap and small scales distally; bulb with short and narrow apophysis, and simple embolus ( Fig. 11 E).

Female: In general similar to male. Tibia I 1.46. Epigynum simple externally ( Fig. 11 G), frontally with darker internal semicircular shade. Dorsal view as in Fig. 11 H, with wavy sclerotized arch anteriorly, and a pair of shoeshaped pore plates.

Distribution. Known only from the type locality.

Figures

FIGURE 11. Belisana yangi sp. nov. A. male, dorsal view; B. male chelicerae, frontal view; C. male left chelicera, retrolateral view; D. male left procursus, prolateral view; E. male left palp, prolateral view; F. same, retrolateral view; G. epigynum, ventral view; H. vulva, dorsal view. Scale lines: A = 0.2 mm; B – H = 0.1 mm.