Rosa, P., R. Heim, and M. V. Bernasconi. “The Palaearctic Types of Chrysididae (Insecta, Hymenoptera) Deposited in the Linsenmaier Collection. Part 4. Elampini: Genus Omalus Panzer, 1801”. Zootaxa, vol. 5297, no. 1, May 2023, pp. 61-86, doi:10.11646/zootaxa.5297.1.3.