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. n. (♂), Icius
bamboo Cao & Li, sp. n. (♂), Nannenus
menghaiensis Cao & Li, sp. n. (♂♀), Pancorius
latus Cao & Li, sp. n. (♂), Phintella
lepidus Cao & Li, sp. n. (♂♀), Phintella
sancha Cao & Li, sp. n. (♂), Ptocasius
paraweyersi Cao & Li, sp. n. (♂♀), and Stenaelurillus
fuscus Cao & Li, sp. n. (♂). Females of Bavia
capistrata (C.L. Koch, 1846) and Phintella
suavisoides Lei & Peng, 2013 are described for the first time. DNA barcodes of 12 species were obtained for future use.