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| Trees damaged by the Asian Longhorned Beetle |
About The Asian Longhorned Beetle Damage
The Asian Longhorned Beetle Damage can be difficult to detect when trees are still in leaf, even for experienced surveyors. During fall and winter, the damage to the trunk and branches of trees is much easier to see. Birders, cross country skiers, hikers, or anyone spending time outdoors this fall and winter can help protect the state from Asian longhorned beetle by learninghow to recognize the signs of an Asian Longhorned Beetle infestation:
- Try to figure out what kind of tree you are looking at. Asian Longhorned Beetle likes hardwood trees, particularly maple, but stays away from oak and cherry. It does not attack conifers like pine or spruce.
- Asian longhorned beetle adults lay their eggs in pits in the bark of the tree. Egg-laying sites, or “oviposition pits,” are ¾ inch across, and look similar to a bite taken out of an apple.
- The exit holes that the adults leave as they emerge from the tree are about ¾ inch in diameter, and are perfectly round.
- If you see what looks like an exit hole and it can easily be reached, try to fit the eraser end of a pencil into the hole. If it doesn’t go in at least one inch deep, it’s not an Asian Longhorned Beetle.
- Asian Longhorned Beetle typically leaves exit holes spread out across a tree, leaving room for each larva to develop. Series of holes together in a line are often caused by woodpeckers or sapsuckers.
