Taxonomic study of the genus Ischnothyreus (Araneae, Oonopidae) from Xishuangbanna Rainforest, southwestern China.

Eight species of the genus Ischnothyreus Simon, 1893 from Xishuangbanna, Yunnan, China are recognized, including six new species: I. cristiformis Tong & Li, sp. nov. (♂♀), I. mangun Tong & Li, sp. nov. (♂♀), I. mengyang Tong & Li, sp. nov. (♂♀), I. peltifer (Simon, 1892), I. qidaoban Tong & Li, sp. nov. (♂♀), I. qiuxing Tong & Li, 2020 (♂♀), I. sijiae Tong & Li, sp. nov. (♀) and I. xiaolongha Tong & Li, sp. nov. (♂♀). The male of I. qiuxing Tong & Li, 2020 is described for the first time. Photos of the habitus and copulatory organs are provided.