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1. Adult Asian Longhorned Beetles Individuals are
¾ to 1¼ inches long, with jet black body and mottled white
spots on the back. The long antennae are 1½ to 2½ times
the body length with distinctive black and white bands
on each segment. The feet have a bluish tinge.
2. Oval to round pits in the bark. These egg-laying
sites or niches are chewed out by the female beetle,
sites or niches are chewed out by the female beetle,
and a single egg is deposited in each niche.
3. Oozing sap. In the summer, sap may flow from egg
niches, especially on maple trees, as the larvae feed
niches, especially on maple trees, as the larvae feed
inside the tree.
4. Accumulation of coarse sawdust around the
base of infested trees, where branches meet the main stem,
and where branches meet other branches. This sawdust is
created by the beetle larvae as they bore into the main tree
stem and branches.
base of infested trees, where branches meet the main stem,
and where branches meet other branches. This sawdust is
created by the beetle larvae as they bore into the main tree
stem and branches.
5. Round holes, 3/8 inch in diameter or larger, on the
trunk and on branches. These exit holes are made by adult
beetles as they emerge from the tree.
trunk and on branches. These exit holes are made by adult
beetles as they emerge from the tree.
- To report ALB or ALB tree damage, visit http://massnrc.org/pests/albor call toll-free: 1-866-702-9938.
- Report any suspected evidence or actual sightings to the Canadian Food Inspection Agency at 1-800-442-2342 or 416-665-5055.
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