. . . . . . . . "Colletes hirtibasis" . "Senecio rosmarinifolius" . . "Cockerell, T.D.A. 1936. African bees of the genus Colletes. American Museum Novitates 856: 1-10" . . . . "Eardley C, Coetzer W. 2011. Catalogue of Afrotropical Bees. http://doi.org/10.15468/u9ezbh" .