Bogusch, P.; Hadrava, J.

European Bees of the Genera Epeolus Latreille, 1802 and Triepeolus Robertson, 1901 (Hymenoptera: Apidae: Nomadinae: Epeolini): Taxonomy, Identification Key, Distribution, and ecology

. Zootaxa 2018, 4437, 1–60.