asian longhorned beetle

Asian Longhorned Beetle

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) wants to remind everyone that August is Tree Check Month.

Now is the time to keep a lookout for the Asian Longhorned Beetle (ALB). This beetle is an invasive species that feeds on hardwood trees including ash, birch, elm, maple, poplar and willow. There is currently no cure to save infested trees, and they need to be removed. Removing them keeps the ALB from spreading to nearby trees, as well as protecting homes and other personal property because infested trees will die and can drop branches.

If you spot any of the following signs on your trees, they may be affected by ALB.

Exit Holes: adult beetles chew their way out of the tree leaving 1/4 inch exit holes

Frass: as the larvae feed they leave a sawdust-like excrement on the ground or branches

Tunneling: larvae tunnel through the layers of the tree

Dead Branches: if the tree has lost a branch of has a dead branch showing, it could be a sign that something is wrong

The ALB is slow to spread on its own during the early stages of an infestation so early detection is crucial to containing it. You can also stop the spread of the beetle by not moving firewood from areas that are quarantined. If you seen any signs of the ALB, contact Branch Tree & Landscape Service immediately.

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Michigan Invasive Species: Asian Longhorned Beetle