The Butternut Woollyworm is the larval stage of a sawfly that feeds on walnut and butternut trees. These caterpillar-like larvae can sometimes defoliate trees during outbreaks.
Quick Facts
- Order: Hymenoptera
- Habitat: Walnut and butternut trees
- Diet: Tree leaves
- Status: Occasional tree pest
Identification
The larvae resemble fuzzy caterpillars but belong to the sawfly group rather than true moths or butterflies.
They are part of the broader group of sawflies.
Distribution
This insect occurs in regions where walnut and butternut trees grow.
Life Cycle
The life cycle includes egg, larva, pupa, and adult sawfly stages.
Pest Status
Heavy infestations may temporarily defoliate trees.
Prevention
- Monitor trees during summer
- Encourage natural predators
Control
Manual removal of larvae or biological insecticides may help control outbreaks.