Portman, Z. M., J. Gardner, I. G. Lane, N. Gerjets, J. D. Petersen, J. S. Ascher, M. Arduser, E. C. Evans, C. Boyd, R. Thomson, and D. P. Cariveau. “A Checklist of the Bees (Hymenoptera: Apoidea) of Minnesota”. Zootaxa, vol. 5304, no. 1, June 2023, pp. 1-95, doi:10.11646/zootaxa.5304.1.1.