Two species in the Aedes (Diceromyia) furcifer complex, Ae. furcifer s.s. and Ae. cordellieri, occur in southern Africa. They occur either allopatrically or sympatrically in lowland wooded savanna in tropical or subtropical regions in the Northern Province, Mpumalanga Province, and northern KwaZulu-Natal in South Africa and in Zimbabwe. A map of the distribution of these mosquitoes is presented including 2 new locality records where Ae. cordellieri is allopatric. A morphological study showed that immatures and adult females of the species are indistinguishable. This included a detailed study of the female terga. Differences in the male gonocoxite remain the only means to distinguish the 2 taxa.