The afrotropical stenopogonine genera Anasillomos Londt, 1983, Oratostylum Ricardo, 1925, and Remotomyia Londt, 1983 are reviewed. A new genus, Ontomyia, is erected for Oratostylum ricardoi Londt, 1985. Two new species are described in Oratostylum, O. crenum from Pilanesberg National Park and O. zebra from Mountain Zebra National Park, South Africa. Generic descriptions, and new keys to the genera and species of Oratostylum and Remotomyia, are provided. The distribution and seasonality of all species are discussed.