The subgenus Molpemyia is resurrected from synonymy with the subgenus Finlaya and the species Aedes auridorsum, Ae. pecuniosus and Ae. purpureus are assigned to it. The subgenus is fully redescribed and features given to distinguish it from the other subgenera of Aedes. The three included species are described and pertinent stages and structures are illustrated. Tables include the chaetotaxy of the pupa and larva of Ae. pecuniosus.