Background: Cuspidevia Jäch & Boukal, 1995 is a member of the tribe Macronychini which has the following features: antennae short, 6-10 segmented, aedeagus long and cylindrical, paramere very small, slender or lacking. This genus currently comprises only three species. All species are distributed in China.
New information: Cuspideviapilosus sp. nov. is reported from Guangdong, Guangxi and Jiangxi Provinces in China. Habitus and diagnostic features of the new species are illustrated.
Keywords: Cuspidevia; Guangdong; Guangxi; Jiangxi; new species; riffle beetles.
Dongju Bian, Yuqi Hu, Yanfeng Tong.