A review of Gnathoncus of Southeast Asia (Coleoptera: Histeridae: Saprininae)

Six species of the genus //Gnathoncus// Jacquelin du Val, 1857 occur in the region of Southeast Asia: //G. brevisternus// Lewis, 1907, //G. semimarginatus// Bickhardt, 1920, //G. viet-namicus// Kryzhanovskij, 1972, //G. rotundatus// (Kugelann, 1792), //G. nannetensis// (Marseul, 1862), and the newly described //G. sechuanus// sp. nov. (China: Sichuan). Two rare species, //G.？brevisternus// and //G. semimarginatus//, are redescribed; all species are figured and keyed. The lectotype of //Gnathoncus brevisternus// is designated and the species is newly reported from Vietnam and Nepal