L. C.  Rocha-Filho and Packer, L., ?hylogeny of the cleptoparasitic Megachilini genera Coelioxys and Radoszkowskiana, with the description of six new subgenera in Coelioxys (Hymenoptera: Megachilidae). ?, Zoological Journal of the Linnean Society, vol. 180, pp. 354?413, 2016.