Olszewski, P., Ljubomirov, T., Wiśniowski, B., Kowalczyk, J.K. and Krzyżyński, M. 2016.

New records of the genus Diodontus Curtis, 1834 (Hymenoptera: Crabronidae) from Bulgaria, Montenegro and Poland, with a key to Central and Eastern European species

. Zootaxa. 4061, 2 (Jan. 2016), 164–172. DOI:https://doi.org/10.11646/zootaxa.4061.2.6.