Longhorned Borer Beetle from Uruguay

Need Help!
Location: Uruguay South America
December 18, 2011 7:05 pm
Hi, I have been hearing noises in my wood shelves that sound like electricity is running through them. Its off and on so I have been suspicious that it was insects. Then tonight I found this thing crawling on the floor next to the shelves. What is it and is it dangerous? Is it making that electricity sound?
Thank you in advance!
Signature: Petrified Parent

Longhorned Borer Beetle

Dear Petrified Parent,
This is some species of Longhorned Borer Beetle in the family Cerambycidae.  The larvae are wood borers.  Many members of the family are capable of making squeaking sounds that might be interpreted as sounding like electricity.  It is possible that the larvae were in the wood at the time the shelves were milled and that the adults were delayed in emerging.  The adult beetles will not harm your family.

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