Megachilidae (Hymenoptera, Apoidea) from Malaŵi (Central Africa). The genera Creightonella, Megachile (s.str.) and Chalicodoma

A large collection of Hymenoptera was made in Malaŵi (Central Africa) between 1968 and mid 1975. In this collection there are 113 specimens (10 species) of the genus Creightonella, 408 specimens (38 species) of the genus Megachile (s.str.) and 348 specimens (12 species and 6 subspecies) of the genus Chalicodoma (Apoidea: Megachilidae). Their distribution in Malawi is indicated. Seven new species are described viz. M. nigrimanus (♂ + ♀); M. feijeni (♂ + ♀); M. horrida (♀); M. nigra (♀); M. zombae (♀); M. mlunguziensis (♀); and M. punctomarginata (♂).