[1]
Vikberg, V. 1999. <i>Crossocerus assimilis</i> and <i>Bethylus boops</i>, two aculeate wasps new to the fauna of Finland (Hymenoptera, Crabronidae and Bethylidae). Entomologica Fennica. 10, 4 (Dec. 1999), 245–246. DOI:https://doi.org/10.33338/ef.84031.