Sheffield, C.S., Vilhelmsen, L. and Bakker, F. 2021. Taxonomy of the New World bee genus Agapostemon Guérin-Méneville – new names and synonymies (Hymenoptera: Halictidae). European Journal of Taxonomy. 751, 1 (May 2021), 1–23. DOI:https://doi.org/10.5852/ejt.2021.751.1375.