Two new species of Ceratocanthinae from the Dayao Mountains, Guangxi, China (Coleoptera: Hybosoridae)

Two new species of ceratocanthine beetles, namely Cyphopisthes erlangshen sp. nov. and Madrasostes lini sp. nov., are herein described from the Dayao Mountains, Guangxi, China. The former represents a new national record for the genus Cyphopisthes Gestro, 1899. Illustrations of the habitus and diagnostic characters of both species are provided.