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Longhorn BeetlesLonghorn Beetle?
Fri, Mar 20, 2009 at 5:59 AM
I came upon this sunbathing beetle on March 2 while walking along the beach just west of Colonia, Uruguay. The beach was along the River Plate, just across from Buenos Aires, Argentina. I was wondering if it was indigenous or perhaps had washed ashore from a passing freighter.
Patrick J.McNamara
Real de San Carlos, Uruguay
Longhorned Borer Beetle
Dear Patrick,
You are correct. This is a Longhorn Borer Beetle or Longicorn in the family Cerambycidae. We doubt it fell off of a freighter and suspect it is native. We don’t recognize the species, but perhaps one of our readers will write in with a correct identification.
Update: from Eric Eaton
Sun, 22 Mar 2009
Daniel:
Oh, and I’m fairly confident the Uroguayan longhorned beetle is a species of Trachyderes. Sure looks like it anyway.
Eric
Update:
Sun, Mar 22, 2009 at 7:05 AM
Hi Bugman:
Good call Eric. It looks like Retrachydes (=Trachyderes) thoracicus. The Argentinean link has an excellent photo about ¾ of the way down. Regards.
Karl
http://www.cerambycoidea.com/foto.asp?Id=197
http://www.argentinean-insects.com/cerambycidae.htm
Thanks Eric,
We will link to the Texas Beetle Information page since there is one member of the genus found in the U.S., Trachyderes mandibularis, the Long Jawed Longhorn Beetle, though it is not the same species.
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