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Asian Longhorned Beetle

The Asian Longhorned Beetle (ALB) is large insect, ranging in size from 0.75-1.25 inches long. The beetle has noticeable long black and white antennae. The body is glossy black with irregular white spots. The adult beetles are poor fliers, generally flying short distances to neighboring trees. The beetles feed on a variety of hardwood trees and pose a significant threat to northeast hardwood forests. The USDA estimates the Asian longhorned beetle could cause as much as $138 billion in damage to the U.S. economy if not contained. Adult beetles can be seen from late spring to fall depending on the climate. Scientists believe that the Asian Longhorned Beetle came from China in wood crating, pallets or braces used to support cargo during shipping.

Females chew pits in the bark used for depositing eggs. Eggs hatch in 1-2 weeks, and the young larvae begin feeding and boring into the wood. Older, larger larvae tunnel deep into the wood, periodically pushing coarse sawdust out of entrance holes. The larvae spend the winter in the tree, emerging as adults in late spring. It usually only takes one year to go from egg to adult. There are no U.S. Environmental Protection Agency-approved pesticides which effectively control the Asian longhorned beetle.

If you see this beetle call the USDA toll free: NY: (866) 265-0301, NJ: (866) BEETLE1

View the USDA Forest Service Pest Alert for the Asian Longhorned Beetle (Adobe PDF Reader© Required)

Additional Information
Signs of Asian Longhorn Beetle Infestation
Copious amounts of coarse sawdust are produced adult beetles as they
Larva Damage
Sawdust at the base of a tree is a possible sign of infestation.
Damage causes by larva
Egg laying Site Exit Holes for the ALB
An egg laying site
Exit holes produced by adult beetles