Other Pests You May See—Bloom through Late Fruit Set

On this page
  • Armyworms
  • Green peach aphid
  • Hornworms
  • Leafminers
  • Loopers
  • Lygus
  • Potato aphid
  • Thrips
  • Tomato bug
  • Tomato bug damage
  • Tomato fruitworm
  • Tomato pinworm
  • Whiteflies
  • Virus symptoms

Use the photos below to identify pests you may see during the bloom season. Keep records of aphids, caterpillars and armyworms, leafminers and whiteflies. Names link to information on identification and management.

Click on photos to enlarge

Western yellowstriped armyworm and beet armyworm
Identification tip: Young armyworms skeletonize foliage.

Green peach aphids
Green peach aphid
Identification tip: The green peach aphid is dark green to yellow, without a waxy bloom. Tubercles on antennae are converging rather than diverging on the potato aphid.

Identification tip: Both species of hornworms have a large horn on the posterior end of the body.

Identification tip: Loopers are easily recognized because they crawl by arching their backs.

Identification tip: Adults are yellowish, brownish, or greenish bugs, about 0.3 inch in length, with a conspicuous triangle in the center of the back that is tinged brown, red, or yellow.

Potato aphid
Potato aphid
Identification tip: This aphid is much bigger than the green peach aphid with a more elongate body shape and is generally found on the terminals of tomato plants later in the season. It is also considered to be more damaging.

Identification tip: Thrips are small insects, about 0.04 inch long. Adults have two pairs of narrow wings which are fringed with hairs.

Tomato bug
Tomato bug
Identification tip: Tomato bugs are slender plant bugs about 1/4 inch in length with long legs and a green body. Nymphs (right) resemble adults (left), but are smaller and lack wings.

Tomato bug damage
Tomato bug damage
Identification tip: Tomato bug damage results in reddish rings around petioles and stems which easily break when contacted.

Color variations of tomato fruitworm.
Tomato fruitworm
Identification tip: Newly hatched larvae have black heads and are creamy white with black spots and hairs. More mature larvae (shown here) range from yellowish green to nearly black, have fine white lines along the body and retain the black spots with hairs.
Tomato fruitworms often begin feeding under the calyx.
Tomato fruitworm damage.
Identification tip: Larvae enter fruit at the stem end.

Tomato pinworm
Tomato pinworm
Identification tip: This caterpillar feeds on leaves and creates blotch type mines but causes most of its damage when it attacks the fruit.

Curly top
Virus symptoms

Identification tip: Whitefly adults are tiny, 0.06 inch long, yellowish insects with white wings.


Top of page

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2016 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/m783bpothrpests.html revised: June 24, 2016. Contact webmaster.