Astafurova, Yulia, and Maxim Proshchalykin. 2020. “New and Little-Known Bees of the Genus Sphecodes Latreille, 1804 (Hymenoptera: Apoidea: Halictidae) from the Himalayas”. European Journal of Taxonomy 729 (1):74–120. https://doi.org/10.5852/ejt.2020.729.1195.