Reference

N. G. Davydova, Yuriy Andreyevich Pesenko (2002): The fauna of bees (Hymenoptera, Apoidea) of Yakutia. 1. [Ru, en; 10 figs., 7 tabs., 63 refs. Date: 28.VIII.2002]. – Ent. Obozrenie (Leningrad) – 81 (3): 582 - 599.