Broad-necked Root Borer

Natural Habitat

Deciduous forests and woodlands, often found near the roots of oak, chestnut, and fruit trees.

Diet & Feeding

Larvae feed on the roots of various living trees and decaying stumps. Adults are not known to feed extensively, though some may consume nectar or sap.

Behavior Patterns

The insect is most active from June to August. Adults are nocturnal and often attracted to lights. Females lay eggs in the soil near tree roots. The larvae live underground for 3 to 4 years before pupating.

Risks & Benefits

Risks: Larvae can cause significant damage to the roots of fruit trees and ornamental shrubs, potentially killing them. Benefits: They play a role in the ecosystem by breaking down decaying wood and serving as a food source for birds and small mammals.

Identified on: 2/19/2026