Schmid-Egger, C., M. Fallahzadeh, M. Khosroabadi, and T. Ljubomirov. “A New Species of Holotachysphex De Beaumont, 1940 (Hymenoptera, Apoidea, Crabronidae) from Iran With Identification Key to Species”. Zootaxa, vol. 4169, no. 1, Sept. 2016, pp. 187–193, doi:10.11646/zootaxa.4169.1.11.