The Bronze Birch Borer (Agrilus anxius) is a destructive wood-boring beetle that attacks birch trees. It is considered one of the most serious pests of ornamental birch trees in North America.
Quick Facts
- Family: Buprestidae
- Host Trees: Birch species
- Larval Diet: Tree bark and cambium
- Impact: Tree decline and death
Identification
Adult beetles are slender and metallic bronze in color, measuring about 1/2 inch long. Larvae are cream-colored and tunnel beneath tree bark.
The species belongs to the group of wood-boring beetles.
Distribution
The bronze birch borer occurs across much of North America where birch trees grow.
Life Cycle
Females lay eggs on tree bark. After hatching, larvae tunnel beneath the bark where they feed and develop.
Pest Status
This beetle is a major pest capable of killing stressed or weakened birch trees.
Prevention
- Keep birch trees healthy and well-watered
- Avoid planting susceptible birch species
- Monitor trees for early signs of infestation