Schmid-Egger, C.; Fallahzadeh, M.; Khosroabadi, M.; Ljubomirov, T. A New Species of Holotachysphex De Beaumont, 1940 (Hymenoptera, Apoidea, Crabronidae) from Iran With Identification Key to Species. Zootaxa 2016, 4169, 187–193.