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Question I think I have a tree that is infested with the Asian Longhorned Beetle. How can I tell? Who do I call to confirm whether or not I do?

Answer The Asian Longhorned Beetle is attacking many trees in the New York City area, especially hardwood trees such as maple, elm, horsechestnut, poplar, birch, willow and mimosa. It does not attack evergreen trees. The signs of infestation are:
- Large round holes (1/2 inches in diameter) on the tree trunk, branches and exposed roots. Adults exit from these holes.
- Oval to round wounds in the bark (up to ½ in diameter). Adult females chew these shallow indentations in the bark to lay an egg in.
- Large piles of coarse sawdust around the base of trees or where branches meet the main trunk.

These beetles are very large. The adult beetles are approximately 1 – 1 ¼ inches long with very long black and white-banded antennae. The body is glossy black with distinct white spots. They can usually be seen between June and November.

If you have a beetle that matches this description or a tree with any of these signs of infestation, please call the Department of Agriculture and Markets to arrange for an inspector to come out to your property for an inspection.

Back Contact: NYS Department of Agriculture & Markets
E-mail:info@agmkt.state.ny.us
Phone: 1-800-554-4501

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