Revision of the genus Koch, 1965 (= Medvedev, 2007, syn. nov.) (Coleoptera, Tenebrionidae, Blaptini).

The relationship between the genera Koch, 1965 and Medvedev, 2007 within the tribe Blaptini is discussed, and a new synonymy is proposed: Medvedev, 2007, of Koch, 1965. As a result, three new combinations are established: (Medvedev, 2007), , (Medvedev, 2007), , and (Medvedev, 2007), Koch, 1965 is redescribed, and a lectotype is designated. Three new species of the genus are described and illustrated from China: (Guizhou), (Yunnan), and (Yunnan). A distribution map and a key to species of the revised genus are presented.