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Hey, that’s not ALB! Graphisurus beetle

Massachusetts is home to several native species of longhorned beetle, many of which bear some resemblance to the destructive invasive pest Asian longhorned beetle (ALB) (Anaplophora glabripennis). The Graphisurus beetle (Graphisurus fasciatus) has some similarities to ALB but can be distinguished in a few key ways. Though it shares the long antennae and long splayed legs of ALB, it is typically less than an inch long, about half the size of ALB. Also, Graphisurus is brownish in color with a mottled pattern, very different from ALB’s stark white spots on black. Finally, the female Graphisurus beetle has a distinct elongated back segment that protrudes beyond the wing cases, while ALB does not.

The Graphisurus beetle prefers oak as its host tree to feed on and lay eggs, and like sawyer beetles, targets dead or dying trees. The beetles are also sometimes attracted to artificial lights at night, whereas ALB is not.

Any suspicious beetles or tree damage can be reported here. Be sure to get a picture of collect the specimen.

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