Two new species of Motschulsky, 1863 ambrosia beetle from Taiwan and Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini).

Two xyleborine ambrosia beetles, . and are described from Taiwan and Thailand, respectively, based on DNA sequences (COI and CAD) and morphological characteristics. A key to the species of Southeast Asia is provided.

East Asian Erichson (Curculionidae, Scolytinae): new species, new synonymy and redescriptions of species.

Erichson, 1836 is a taxonomically challenging genus. It is particularly speciose in Asia. Many species are minor pests of fruit tree crops and forest products.