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superparasitism

n. A form of parasitism in which the host (typically an insect larva such as a caterpillar) is attacked more than once by a single species of parasitoid.

Wikipedia
Superparasitism

Superparasitism is a form of parasitism in which the host (typically an insect larva such as a caterpillar) is attacked more than once by a single species of parasitoid. Multiparasitism, on the other hand, occurs when the host has been parasitized by more than one species.