ABSTRACT: Twenty one jumping spider species from South Yunnan are reported, diagnosed, described and illustrated; 19 of them are described as new: Afraflacilla ballarini Cao & Li, sp. n. (♂), Agorius tortilis Cao & Li, sp. n. (♂♀), Bavia exilis Cao & Li, sp. n. (♂), Carrhotus kevinlii Cao & Li, sp. n. (♂♀), Carrhotus sarahcrewsae Cao & Li, sp. n. (♂), Chinattus wengnanensis Cao & Li, sp. n. (♂♀), Chinophrys mengyangensis Cao & Li, sp. n. (♂♀), Cocalus menglaensis Cao & Li, sp. n. (♂♀), Cosmophasis xiaolonghaensis Cao & Li, sp. n. (♂♀), Cytaea yunnanensis Cao & Li, sp. n. (♂), Gedea pinguis Cao & Li, sp. n. (♂), Gelotia zhengi Cao & Li, sp
