Diodontus

Olszewski, Piotr, Ljubomirov, Toshko, Wiśniowski, Bogdan, Kowalczyk, Jan Krzysztof & Krzyżyński, Maciej, 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), pp. 164-172 : 166

Key to the Central and Eastern European species of Diodontus

1. Flagellum with 10 flagellomers. Females................................................................... 2

- Flagellum with 11 flagellomers. Males..................................................................... 9