Astafurova, Yulia V., and Maxim Yu. Proshchalykin. “Bees of the Genus Sphecodes Latreille 1804 of Siberia, With a Key to Species (Hymenoptera: Apoidea: Halictidae)”. Zootaxa 4052, no. 1 (December 1, 2015): 65–95. Accessed May 2, 2025. https://www.mapress.com/zt/article/view/zootaxa.4052.1.3.