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Avocado
> Year-Round IPM Program > Caterpillar
Management > Caterpillars
Avocado
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 adults are mostly
tan to orangish on top, with a narrow black band across the
middle of the wings. |
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. |
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 |
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. |
Amorbia (and orange tortrix) lay pale, oval-shaped eggs,
overlapping and shinglelike, in flat masses. |
Orange tortrix eggs are laid in an overlapping mass,
resembling amorbia eggs. |
Larva |
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. |
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. |
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 |
An omnivorous looper pupa close-up with its silk covering pulled back. |
The 0.5 to 0.75 inch long amorbia pupa is initially pale
green, then tan, and finally brown to orangish before adult
emergence. |
The orange tortrix pupa is about 0.5 inch long and initially
pale or cream colored, then brown or orangish. |
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