Belisana tianlinensis, 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

Belisana tianlinensis sp. nov.

( Fig. 10 )

Type material. Holotype male, China: Guangxi Zhuang Autonomous Region, Tianlin County (24°19'N, 106°14'E), 28 May 2002, Chao Zhang leg.; paratypes: 2Ƥ, same data as holotype ( MHBU).

Etymology. The species name refers to the type locality.

Diagnosis. The new species is most similar to B. lamellaris Tong & Li, 2008 , but can be distinguished by the shapes of the procursus ( Fig. 10 C) and the chelicerae ( Fig. 10 B), also by the longer bulbal hooked apophysis ( Fig. 10 D) and the female genitalia ( Figs 10 F–G).

Description. Male (holotype). Total length 2.47 (2.55 with clypeus), carapace length 0.57, width 0.91. Leg I: 18.92 (4.64 + 0.27 + 4.82 + 7.55 + 1.64), tibia II: 3.28, tibia III: 2.00, tibia IV: 3.00; tibia I L/d: 46. Habitus as in Fig. 10 A, carapace pale ochre-yellow, brown margins laterally; abdomen ochre-grey, without spots dorsally. Ocular area not elevated, thoracic furrow absent. Clypeus brown, modified with triangular apophysis frontally. Sternum nearly as long as wide (0.60). Chelicerae as in Fig. 10 B, with pair of proximal rounded projections laterally, and distally a pair of small curved apophyses with tips unmodified. Retrolateral trichobothrium of tibia I at 15%; legs yellowish without spines and curved hairs, with vertical hairs proximally on all metatarsi; tarsus I with 18 pseudosegments, quite distinct distally. Palps as in Figs 10 C–E, trochanter with short rounded retrolateral apophysis; femur with small hump proximo-dorsally; procursus complicated distally, with ventral membranous flap and hooked dorsal spine; bulb with hooked apophysis and simple embolus.

Female: In general similar to male. Tibia I in 2 females: 3.00, 3.12. Epigynum simple externally ( Fig. 10 F), frontally with dark internal semicircular shade. Dorsal view as in Fig. 10 G, with wavy sclerotized arch anteriorly, and a pair of triangular pore plates.

Distribution. Known only from the type locality.

Figures

FIGURE 10. Belisana tianlinensis sp. nov. A. male, dorsal view; B. male chelicerae, frontal view; C. male left procursus, prolateral view; D. male left palp, prolateral view; E. same, retrolateral view; F. epigynum, ventral view; G. vulva, dorsal view. Scale lines: A = 0.2 mm; B – G = 0.1 mm.