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Locust Borer, but in Oregon?

Posted by October 3rd, 2005 at 12:00 am

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Beetles

Black and Yellow Beetle
Hi-
Just found your site. Hope you can identify this beetle for me. We have a nursery and don’t like to kill "good bugs" so we kind of like to know which category they fall into. I couldn’t find this one listed anywhere and thought you might be able to help.
Thanks,
Roger Pearce
Canyon Gardens
Maupin, OR

locust borer oregon Locust Borer, but in Oregon?

Hi Roger,
This looks to be a Locust Borer, Megacyllene robiniae. This is a common beetle in the East and South, but we are totally unaware of it being in Oregon. The larvae bore into the wood of black locust trees and adults feed on pollen, especially goldenrod.

Well that explains it. The Maupin City Park replaced about 30 Black Locust trees this year that had died. I don’t have Black Locust on this property but do have lots of Honey Locust. I’m about three miles from the city park. So I guess we know they’re in Oregon now. Thanks for identifying it.
Roger Pearce

(10/04/2005) This just in from Eric Eaton: “Apparently the locust borer is now found throughout most of the U.S., as its host is used as an ornamental far outside its native range. “

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