Parker, F.D. and Griswold, T. 2013. New species of the cleptoparasitic bee genus Stelis (Hymenoptera: Megachilidae, Anthidiini) from the Nearctic Region. Zootaxa. 3646, 5 (May 2013), 529–544. DOI:https://doi.org/10.11646/zootaxa.3646.5.3.