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UC IPM Home > Homes, Gardens, Landscapes, and Turf > Vegetables > Invertebrates

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How to Manage Pests

Pests in Gardens and Landscapes

Viral diseases

Loopers are often killed by a viral disease called nuclear polyhedrosis. The dead larvae turn black and become limp, often hanging from leaves. The body eventually disintegrates, releasing virus particles that readily spread to other larvae.
Looper killed by a virusLooper killed by a virus

Statewide IPM Program, Agriculture and Natural Resources, University of California
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For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/GARDEN/VEGES/PESTS/viruslooper.html revised: January 17, 2008. Contact webmaster.