Hastings, J. M., Schultheis, P. J., Whitson, M., Holliday, C. W., Coelho, J. R., & Mendell, A. M. (2008). DNA barcoding of new world cicada killers (Hymenoptera: Crabronidae). Zootaxa, 1713(1), 27–38. https://doi.org/10.11646/zootaxa.1713.1.2