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The genus-group taxon Megatrigon Johnson, 1898, stat. nov., is revised and treated as a valid genus within the Merodontini (= Eumerini). Extensive diagnoses are given for the genus and for its three constituent species groups: argenteus group [11 spp.], nivalis group [monotypic], sexfasciatus group [3 spp.]. Five new generic combinations are proposed within Megatrigon: M. argenteus (Walker, 1852) comb. nov., M. flavimarginatus (Hull, 1964) comb. nov., M. jacobi (Hervé-Bazin, 1913) comb. nov., M. nivalis (Hull, 1964) comb. nov. and M. ochreatus (Hull, 1964) comb. nov. All species of the argenteus group are revised and nine new species are described: Megatrigon apiformis sp. nov., M. argentifrons sp. nov., M. argentimaculatus sp. nov., M. cooksoni sp. nov., M. immaculatus sp. nov., M. magnicornis sp. nov., M. natalensis sp. nov., M. sexmaculatus sp. nov., M. tabanoides sp. nov. Within the sexfasciatus group, M. jacobi (Hervé-Bazin, 1913) comb. nov. is treated as a senior synonym of Eumerus connexus Hull, 1964 syn. nov., but no further work is done at the species level due to insufficient material.
This paper describes five new Ceratitis species from the eastern and southern parts of the Afrotropical Region: C. (Pterandrus) quilicii De Meyer, Mwatawala & Virgilio sp. nov.; C. (Ceratalaspis) pallidula De Meyer, Mwatawala & Virgilio sp. nov.; C. (Ceratalaspis) taitaensis De Meyer & Copeland sp. nov.; C. (Ceratalaspis) sawahilensis De Meyer & Virgilio sp. nov.; and C. (Ceratalaspis) flavipennata De Meyer & Virgilio sp. nov. Their relationships with closely allied species within their respective subgenera are discussed where appropriate, and diagnostic characters are given. DNA barcodes are provided for all new species. In addition, the hitherto unknown male of C. (Pardalaspis) serrata De Meyer, 1996 is described, based on material collected in the Democratic Republic of Congo. Recognition of these new species and sexes is the result of an integrative approach using morphological characters and DNA data.