The distribution of the genus Microdiores Jocque, 1987, so far only known from East Africa, is extended to Central Africa with the description of the new species, Microdiores rwegura sp. n. (♂) and M. violaceus sp. n. (♂♀), both from the Kibira National Park in Burundi. A third new species, M. aurantioviolaceus (♂), from northern Tanzania is described. The status of the genus is confirmed and a key to the males of the species is provided.