Eggs: In most cases, wasps insert several eggs in one host. Others lay only a single egg in each host.

Larvae: One or many larvae per host. Parasite eventually kills the host. Parasitized body of an aphid transforms into a “mummy.”

Pupae: Occur inside the host body (one larva per host) or outside the host body (multiple larvae per host). Multiple cocoons may be visible on or near host.

Aphid mummy: Tan. Considerably swollen. Still resembles the aphid.