Astafurova, Yulia V., and Maxim Yu. Proshchalykin. 2015. “Bees of the Genus Sphecodes Latreille 1804 of Siberia, With a Key to Species (Hymenoptera: Apoidea: Halictidae)”. Zootaxa 4052 (1). Auckland, New Zealand:65–95. https://doi.org/10.11646/zootaxa.4052.1.3.