Nemkov, P. G., & Pulawski, W. J. (2009). A cladistic analysis of Gorytina (Hymenoptera: Crabronidae: Bembicini), with a reclassification of the subtribe. Zootaxa, 2069(1), 1–17. https://doi.org/10.11646/zootaxa.2069.1.1