What's That Bug? does not endorse extermination

bug with really long antennae
Location:  Downtown Seattle WA USA
July 20, 2010 12:44 pm
Dear Bugman,
This bug was a stowaway in my co-worker’s car, July 14, in downtown Seattle. It doesn’t look like a city bug to me, but then again, what do I know?
Thank you for your assistance in this important matter.
LDY

Longhorn Borer Beetle

Hi LDY,
Your beetle is a Longhorned Borer Beetle in the family Cerambycidae, but we have been unable to verify a species identity in the fifteen minutes we spent on BugGuide.  Perhaps one of our readers can assist with this identification.

Ed. NOte: Karl wrote in a comment with a theory that this might be Monochamus obtusus, and sararall also believes it is a Monochamus species.

What's That Bug? does not endorse extermination

3 Responses to Unknown Longhorn in genus Monochamus

  1. kkroeker says:

    It looks like a Flat-Faced Longhorn beetle (Cerambycidae: Lamiinae). I believe it is in the genus Monochamus and the best match for appearance and locality that I can find is M. obtusus. K

    http://bugguide.net/node/view/65822/bgimage
    http://plant.cdfa.ca.gov/byciddb/details.asp?id=7833

  2. sararall says:

    How about Monochamus sp. http://bugguide.net/node/view/277 ?

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