Belisana cas, a new spider species from Xishuangbanna Tropical Botanical Garden, China(Araneae, Pholcidae)

A new species, Belisana cas sp. nov. is reported based on description of B. ＂xtbg＂. B. ＂xtbg＂ mentioned by Yao et al.（2018） is unavailable after the ICZN（article 11.3）.