Adult parasitic wasps, Oomyzus gallerucae, on eggs of their host elm leaf beetle, Xanthogaleruca luteola. The top right wasp is host feeding on an egg. Credit: F. Silvestri 1910. Bollettino del Laboratorio di Zoologia Generale e Agraria Della Facolt Agraria in Portici. 4:246-288 Licensed under a Creative Commons Attribution-Noncommercial 3.0 License
