How to Manage Pests

Pests in Gardens and Landscapes

Natural enemies

Natural enemies can effectively control diamondback moth. In Southern California, the ichneumonid wasp, Diadegma insularis, has been identified as the most common parasite. It pupates within the cocoon of the parasitized caterpillar. You can recognize it by the broad stripe around the pupa.

Trichogramma pretiosum may attack diamondback moth eggs.

Pupae parasitized by Diadegma insularis
Pupae parasitized by Diadegma insularis


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