Hi, thanks for your sharp eye and your report. Although this does look like Asian longhorned beetle, it is actually the native Oregon fir sawyer, also called the white-spotted sawyer. It is a native beetle that is not considered a pest. Check out more here:
http://pestdetector.forestry.oregonstate.edu/pests
Thanks for your care for Oregon's natural resources. And keep up the reporting.

Cheers,
Wyatt

Wyatt Williams
July 18, 2019, 2:25 a.m.