A new species of the genus Coladenia, C. neomaeniata is described and illustrated from Weixi County, Yunnan Province, China. The new species is closely allied to C. maeniata Oberthür, but can be distinguished from the latter in the hindwing in which the spot in space Sc R₁ sharply shifted outwardly and its inner edge is not in line with that of the cell spot; also, the valva of male genitalia with long and narrow harpal process. A key to Chinese species is presented, along with their distribution.