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Grape >
Year-Round IPM Program > Rapid Shoot Growth > Identifying
Caterpillars
Grape (Table)
Identifying Caterpillars
On this page
- Omnivorous leafroller
- Western grapeleaf skeletonizer
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- Orange tortrix
- Grape leaffolder
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Look for omnivorous leafroller, western grapeleaf skeletonizer,
grape leaffolder, and orange tortrix (in coastal areas) during rapid shoot
growth. As the season progresses, look for natural
enemies of caterpillars. Names link to more information on
identification and management.
Click on photos to enlarge
| Caterpillars |
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Omnivorous leafroller
Identification
tip: Larvae have a black or brown head capsule and range
from cream to brownish green with whitish tubercles on the top of the
abdomen.
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Western grapeleaf skeletonizer
Identification tip: The third-instars are brownish and
line up to feed. Fourth-instars are
yellow with two purple and several blackish bands.
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Orange tortrix
Identification tip: Larvae are straw colored with a
brown head and prothoracic shield.
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Grape leaffolder
Identification
tip: Larvae are translucent-greenish. Small black spots, located
above the second pair of legs, distinguish later larvae
from omnivorous leafroller.
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