How to Manage Pests

Pests in Gardens and Landscapes

Pest identification and confirmation—Potato tuberworm

Potato tuberworm can often be confused with tomato pinworm. Tomato pinworms may vary in color from gray to yellowish with red or purple around each segment. Pinworms are a problem only on tomatoes. They do not attack potatoes. Potato tuberworms can be distinguished by their dark heads.

Potato tuberworm larva
Potato tuberworm larva

Tomato pinworm larva
Tomato pinworm larva


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

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 our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/GARDEN/VEGES/PESTS/ID/idtuberworm.html revised: January 8, 2014. Contact webmaster.