Kuhlmann, M. and Proshchalykin, M. Y. (2014) “The bees of the genus Colletes Latreille 1802 of the European part of Russia, with keys to species (Hymenoptera: Apoidea: Colletidae)”, Zootaxa. Auckland, New Zealand, 3878(3), pp. 201–247. doi: 10.11646/zootaxa.3878.3.1.