Dicopomorpha zebra Huber, sp. n. (Hymenoptera, Mymaridae) is described as the first species of Dicopomorpha (Ogloblin) from the Afrotropical region, and diversity in the genus is discussed. Kubja Subba Rao is placed in synonymy under Dicopus Enock, syn. n., and its type species transferred to Dicopus as D. longipes (Subba Rao), comb. n. A key to the Alaptus-group of genera (Alaptus, Dicopomorpha, Dicopus, Kikiki, and Mimalaptus) is presented.