Pest on crop
Walnut Caterpillar on english walnut
Datana integerrima
Gregarious caterpillar that feeds in dense colonies on walnut and pecan foliage, capable of defoliating entire branches in days.
- Pest
- Walnut Caterpillar
- Scientific name
- Datana integerrima
- Crop
- English Walnut
- Total hosts
- 3
Walnut Caterpillar on english walnut
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Signs on english walnut
- ▸ Tight clusters of dark hairy caterpillars on branches
- ▸ Skeletonized leaves followed by complete defoliation of affected limbs
- ▸ Mass molting on trunks (caterpillars descend to shed skin)
IPM controls
- ✓ Hand removal of clustered caterpillars during molt on trunks
- ✓ Bt (Bacillus thuringiensis) sprays on young larvae
- ✓ Tolerate light infestations on mature trees (rarely fatal)
- ✓ Encourage parasitoid wasps and tachinid flies
Other crops affected by walnut caterpillar
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