Revision of the bees of the Colletes fasciatus group in southern Africa (Hymenoptera Colletidae)
The Colletes fasciatus species group is revised. It is endemic to the winter rainfall area of South Africa and Namibia, and comprises 25 species, eleven of which are here described as new C. abnormis sp. n. C. bokkeveldi sp. n. C. cyanonitidus sp. n. C. eardleyi sp. n. C. gessi sp. n. C. karooensis sp. n. C. katharinae sp. n. C. knersvlaktei sp. n. C. nieuwoudtvillei sp. n. C. watmoughi sp. n. and C. zygophyllumsp. n. Colletes montacuti Cockerell, 1947 is synonymised under C. albohirtus Cockerell, 1946. All species are redescribed and an identification key is provided.