Pitts, J. P., J. S. Wilson, K. A. Williams, and N. F. Boehme. “Velvet Ants (Hymenoptera: Mutillidae) of the Algodones Sand Dunes of California, USA”. Zootaxa, vol. 2131, no. 1, June 2009, pp. 1–53, doi:10.11646/zootaxa.2131.1.1.