Prous, Marko, Mikk Heidemaa, and Villu Soon. 2011. “Empria Longicornis species Group: Taxonomic Revision With Notes on Phylogeny and Ecology (Hymenoptera, Tenthredinidae)”. Zootaxa 2756 (1). Auckland, New Zealand:1–39. https://doi.org/10.11646/zootaxa.2756.1.1.