You can look for the Asian longhorned beetle (ALB) and the damage it causes by checking trees on your property and in your community. Adult beetles are most active in the warmer months, but you can see tree damage year-round. Finding and reporting the beetle and tree damage early means saving more trees.
What To Look For
Browse our photo gallery to see the signs of ALB infestation.
Exit Holes
Round holes about the size of a dime or smaller when the adult chews its way out
Egg Site
Chewed wounds on the bark about the size of a quarter or smaller where an egg is laid
Tunneling
Feeding damage caused by the larva inside the tree as it grows
Weeping Sap
Tree sap may weep from the egg site wounds on the bark
Frass
Sawdust-like material found on the trunk, branches, or ground
Dieback
Tree health may decline, and branches can die and break off