Asian longhorned beetle (ALB) has a glossy black body with white spots on top of its wings. Adults are 3/4″ to 1″ long. Antennae are roughly 2 times the body length with distinctive black and white bands. The legs and antennae may have a bluish tinge. Adults are present from July to October.
ALB attacks hardwood trees including maple, horse chestnut, ash, and more, and can survive in most regions of the country where host trees exist.
Threats & Impacts:
Adults feed on leaves and twigs; larvae feed directly on critical bark layers. Repeated attacks lead to dieback of the tree crown and eventually death.
The only management technique for Asian longhorned beetle is to destroy infested trees.