Abstract
A species of Acria Stephens, 1834 is reported as new to science, namely Acria cocophaga sp. nov. Descriptions and illustrations of adults, genital, larval and pupal structures are all provided. The types of the species are deposited at the Institute of Zoology, Chinese Academy of Sciences (IZCAS). The genus Acria was erected by Stephens (1834) in the family Yponomeutidae. The genus was included in the "Cryptophasidae" by Fletcher (1929), and then transferred to the subfamily Depressariinae of the family Oecophoridae by Hodges (1978). Minet (1986) and Hodges (1998) designated the genus Acria to belonging to Peleopodidae. However, some works were still keeping the treatment of Hodges (1978) (Pitkin & Jenkins 2004; Yuan, Zhang & Wang 2008).