Belisana chaoanensis, 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 : 55

Belisana chaoanensis sp. nov.

( Fig. 3 )

Type material. Holotype male, China: Guangdong Province, Chao’an County (23°41'N, 116°38'E), Fenghuang Town, 25 May 2010, Shuwen Xing leg.; paratypes: 1Ƥ, same data as holotype.

Etymology. The species name refers to the type locality.

Diagnosis. The new species strongly resembles B. aliformis Tong & Li, 2008 , but can be distinguished by the shapes of the procursus ( Fig. 3 C) and the female internal genitalia ( Fig. 3 H), and also by the bulbal hooked apophysis with a small scale ( Fig. 3 E).

Description. Male (holotype). Total length 1.52 (1.60 with clypeus), carapace length 0.54, width 0.45. Leg I lost, tibia II: 2.18, tibia III: 1.37, tibia IV: 1.91. Habitus as in Fig. 3 A, carapace pale ochre-yellow, brown margins laterally; abdomen ochre-grey, with two pairs of large spots dorsally. Ocular area not elevated, thoracic furrow absent. Clypeus brown, modified with an apophysis forward. Sternum nearly as long as wide (0.57). Chelicerae as in Fig. 3 B, with pair of proximal rounded projections laterally and pair of short frontal apophyses. Legs yellowish without spines and curved hairs, with vertical hairs proximally on all metatarsi. Palps as in Figs 3 C–F, trochanter with short rounded retrolateral apophysis; femur with hump proximo-dorsally; procursus complicated distally, with ventral membranous flap and hooked dorsal spine; bulbal hooked apophysis with a small scale, and embolus complicated.

Female: In general similar to male. Tibia I 2.82. Epigynum simple externally ( Fig. 3 G), frontally with dark internal semicircular shade. Dorsal view as in Fig. 3 H, with wavy sclerotized arch anteriorly, and a pair of irregular pore plates.

Distribution. Known only from the type locality.

Figures

FIGURE 3. Belisana chaoanensis sp. nov. A. male, dorsal view; B. male chelicerae, frontal view; C. male left procursus, prolateral view; D. male bulb, showing apophysis and embolus, retrolateral 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.