Abstract
Ischnothyreus Simon, 1893 is a large genus of oonopid spiders that currently contains 126 species, amongst which, 28 have been recorded in China.
Two new Ischnothyreus species, Ischnothyreus daheling Tong & Zhang, sp. nov. and Ischnothyreus longyang Tong & Zhang, sp. nov., are described, based on specimens collected from Yunnan Province and Ischnothyreus velox Jackson, 1908 is recorded in China for the first time, based on material collected from Guangxi Province. All three species are illustrated.