Compsilura concinnata (tachinid fly; order Diptera) is a parasitoid native to Europe that was introduced to North America in 1906 to control the population of an exotic forest, univoltine, gypsy moth named Lymantria dispar. It is an endoparasitoid of larvae and lives with its host for most of its life. Eventually the parasitoid ends up killing the host and occasionally eating it. It attacks over 200 host species, mainly insects from the Orders: Coleoptera, Lepidoptera and Hymenoptera. Since this parasite has the opportunity to attack many different types of hosts, the biological control has spilled over from the intended forest systems into other areas like agricultural fields affecting cabbage pests like the cabbage looper (Trichoplusia) and the cabbage worm (Pieris rapae) as well as nati