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Hey, that’s not ALB! Northeastern sawyer

Northeastern sawyer

While keeping an eye out for Asian longhorned beetle (ALB) this season, be aware of the several harmless native lookalike species you may encounter. For example, the northeastern sawyer (Monochamus notatus) strongly resembles the whitespotted pine sawyer and thus is similar to ALB.

The northeastern sawyer is our largest native longhorn beetle, about as large as ALB, but the difference in color and pattern sets it apart: it can be distinguished from ALB by its dull grey color and lack of pattern on its wing covers (the antennae may appear banded, but they won’t be as vivid as they are on ALB). Additionally, while adult ALB will be found on living hardwood trees, the northeastern sawyer targets dead or dying conifers. Both adult and larval northeastern sawyers prefer to eat the rotting wood of conifers such as pine, spruce, and fir, versus the live, fresh hardwood required by ALB.

Adult northeastern sawyers are active from May through September, so they will begin dying off while Asian longhorned beetles are still active (through the first hard frost).

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

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