Bogusch, P. & Hadrava, J. (2018)

European bees of the genera Epeolus Latreille, 1802 and Triepeolus Robertson, 1901 (Hymenoptera: Apidae: Nomadinae: Epeolini): taxonomy, identification key, distribution, and ecology

. Zootaxa, 4437 (1), 1–60.