The bees of the genus Colletes Latreille 1802 of the Ukraine, with a key to species (Hymenoptera: Apoidea: Colletidae) Yu, Maxim Kuhlmann, Michael Zootaxa 2012 3488 1 40 X3GQ [151,359,1329,1354] Insecta Colletidae Colletes Animalia Hymenoptera 35 36 Arthropoda species nigricans