Caterpillars You May See

Also see photos of natural enemies of caterpillars. Pest names link to more information on identification and management.

Click on photos to enlarge
Species Omnivorous looper Western avocado leafroller (Amorbia) Orange tortrix
Adult omnivorous looper
Omnivorous looper adults are mostly tan to orangish on top, with a narrow black band across the middle of the wings.
Adult western avocado leafroller
Adult amorbia have variably colored forewings, typically orangish to tan with dark markings. They are about 1 inch long, twice the size of orange tortrix.
Adult orange tortrix
Adults are orange to tan moths with dark markings, and are about 0.4 inch long. Adults of many other Tortricidae moths are also bell-shaped at rest.
Eggs of omnivorous looper
Omnivorous looper eggs are barrel-shaped with a ring of tiny projections around one end. Eggs initially are pale green, then turn shiny reddish to brown.
Eggs of western avocado leafroller
Amorbia (and orange tortrix) lay pale, oval-shaped eggs, overlapping and shinglelike, in flat masses.
Eggs of orange tortrix
Orange tortrix eggs are laid in an overlapping mass, resembling amorbia eggs.
Larva of omnivorous looper
Omnivorous looper larvae have rear prolegs, causing their body to arch up in a loop when they move. Larvae have a gold-colored head and a variably colored body with dark brown, black, green, orangish, yellow, or orangish lines along their sides.
Larva of western avocado leafroller
Late-instar amorbia are distinguished by the presence of a short dark horizontal line on the thorax just behind the head, above the first pair of legs. Orange tortrix larvae lack this dark line.
Larva of orange tortrix
Orange tortrix larvae lack the dark horizontal line on the thorax that occurs on amorbia just behind the head and above the first pair of legs.
Pupa of omnivorous looper
An omnivorous looper pupa close-up with its silk covering pulled back.
Pupa of western avocado leafroller
The 0.5 to 0.75 inch long amorbia pupa is initially pale green, then tan, and finally brown to orangish before adult emergence.
Pupa of orange tortrix
The orange tortrix pupa is about 0.5 inch long and initially pale or cream colored, then brown or orangish.


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/C008/m008bpcaterpillars.html revised: December 6, 2016. Contact webmaster.