My dad found it so I don't have a lot of good information, but it was probably about 2.5 inches, somewhat west of Portland, and was found on a sidewalk. I don't know the area so I can't say what habitats are there that it might have come from.enter image description here

  • $\begingroup$ This is a long horned beetle.. currently trying to pinpoint genus and species. $\endgroup$
    – user22020
    Aug 17, 2017 at 3:09
  • $\begingroup$ I agree that overall appearance is very longhornish. However, I cannot get the shape of the pronotum to fit with the rest of the animal (when thinking about possible tribes/subfamilies) @Charles $\endgroup$ Aug 17, 2017 at 7:50
  • 1
    $\begingroup$ Too bad that the tarsal formula cannot be seen in the picture, which could rule out several families. $\endgroup$ Aug 17, 2017 at 7:58

1 Answer 1


I think this may be a male of Trichocnemis spiculatus (Cerambycidae, subfamily Prioninae). This species is known from Western USA/Oregon, based on this key: Screening Aid for the Cerambycidae of the Western U.S.A. (from Oregon Department of Agriculture). By overall appearance, this species fits well. However, females have more pronounced spines at the sides of the pronotum, which points to a male for the individual in your picture.

enter image description here
(picture from http://cerambycidae.org/taxa/spiculatus-(LeConte-1851), also more pictures at bugguide.net)


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