Astafurova, Y.V. and Proshchalykin, M.Y. 2014. The bees of the genus Sphecodes Latreille 1804 of the Russian Far East, with key to species (Hymenoptera: Apoidea: Halictidae). Zootaxa. 3887, 5 (Nov. 2014), 501–528. DOI:https://doi.org/10.11646/Zootaxa.3887.5.1.