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Banded Alder Borer

Posted by July 6th, 2009 at 9:57 am

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Longhorn Beetles

A beetle like insect with really long antennae.
Sat, Jul 4, 2009 at 7:20 PM
I have no idea what this bug is. It was so intriguing, however, I took about 40 pictures of it! I think it’s a beetle, since it can fly and its wings are hidden under a hard shell. It had black and white stripes.
Please identify this bug!
Grants Pass, Oregon

banded alder borer oregon 300x285 Banded Alder Borer

Banded Alder Borer

Your insect is a Banded Alder Borer, Rosalia funebris, which is sometimes called a California Laurel Borer, but according to Charles Hogue in Insects of the Los Angeles Basin “it does not use California laurel (Umbellaria species) as a primary host.”  According to BugGuide, the  “Larvae feed in dead hardwood trees: maple, alder, oak, willow, etc.”  Some borer beetles attack living trees, but this is not the case with the Banded Alder Borer.

banded alder borer oregon 2 300x219 Banded Alder Borer

Banded Alder Borer

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