UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

SKIP navigation

 

Tomato

Identifying Fruitworms and Armyworms Before Fruit Set

On this page
  • Beet armyworm larva
  • Tomato fruitworm larva

Using a collection tray, shake plants to dislodge armyworms and fruitworms. Identify caterpillars using the photos below. Map areas of concern for monitoring after fruit set. No treatment is required before fruit appears. Names link to information on identification and management.

Click on photos to enlarge

Beet armyworm larva
Beet armyworm larva
Identification tip: Larvae usually are dull green with many fine, wavy, light-colored stripes down the back and a broader stripe along each side.

Tomato fruitworm larva
Tomato fruitworm larva
Identification tip: Older larvae vary in color from yellowish green to nearly black, develop fine white lines along the body and retain black spots at the base of bristlelike hairs.

Beet armyworm larva
Beet armyworm larva
Identification tip: Larvae usually have a dark spot on the side of the thorax above the second true leg.

Tomato fruitworm larva
Tomato fruitworm larva
Identification tip: Older larvae also have patches of stubby  spines on their body segments that are much shorter than the bristles and can be seen best with the use of a  hand lens.


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/C783/m783bpcatworm.html revised: May 19, 2014. Contact webmaster.