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How to Manage Pests

Identification: Natural Enemies Gallery

Aphidius spp.

Scientific name: Aphidius spp. 

Life stages of aphidius spp. adult laying egg mummified aphids mummy with exit hole

Click on image to enlarge

Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Aphidiidae

Common hosts: Green peach aphid, melon aphid, pea aphid, and many other species, mostly aphids.

Commercially available: Some Aphidius species are available commercially.

DESCRIPTION      Life Cycle

Aphidius adults are small wasps, typically less than 1/8 inch (3 mm) long. During their larval stage, most Aphidius feed within the body of an aphid. Complete metamorphosis takes place within the host. The female wasp lays an egg in an aphid. When the egg hatches, the wasp larva feeds inside the aphid. As the larva matures the aphid is killed and becomes slightly puffy or mummified, usually turning tan or golden in color. The adult parasite chews its way out of the mummy leaving a hole. The genus Aphidius contains many species that provide biological control of aphids in agricultural crops, greenhouses, urban landscapes, and home gardens.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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