Kuhlmann, M., and A. Pauly. “New Afrotropical Species of the Bee Subgenus Patellapis (Chaetalictus) With Notes on Additional Species (Hymenoptera: Halictidae)”. Zootaxa, vol. 2674, no. 1, Nov. 2010, pp. 33–50, doi:10.11646/zootaxa.2674.1.3.