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.

Figure, line art illustration. Adult parasitic wasps on eggs of their host elm leaf beetle. 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<br />Licensed under a <a href=https://creativecommons.org/licenses/by-nc/3.0/us/>Creative Commons Attribution-Noncommercial 3.0 License</a>
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