Oil collecting bees mostly of the summer rainfall area of southern Africa (Hymenoptera : Melittidae : Rediviva)

The species of Rediviva (Apoidea, Melittidae) occurring in the summer rainfall region of South Africa are revised. Nine species are recognized, four are described as new: R. brunnea, R. autumnalis, R. rhodosoma and R. transkeiana all attributed to Whitehead and Steiner. Distributions and host plants are given for all the summer rainfall area species and a key to identify both males and females is presented. Rediviva rufipes and R. bicava, a winter rainfall area species, are synonymized.