Four new troglophilous species of the genus Belisana Thorell, 1898 (Araneae, Pholcidae) from Guizhou Province, China

摘要

Four new troglophilous, six-eyed pholcid spiders belonging to the genus Belisana from caves in Shuicheng County, Zhijing County, Xishui County and Yanhe Tujia Autonomic County, Guizhou, China, are diagnosed, described and illustrated: Belisana douqingsp. nov., B. daji sp. nov., B. xishui sp. nov., and B. yanhe sp. nov..Pholcids are small to medium-sized, ecribellate, haplogyne spiders, usually with eight or six eyes, rarely with two, but cave species are often blind (Huber, 2000). Because traditionally many European taxonomists started with European taxa before expanding to the tropics and because pholcids are poorly represented in Europe, most taxonomists were not well prepared to the diversity encountered in the tropics (B.A. Huber, pers.