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. https://doi.org/10.11646/zootaxa.4437.1.1