Yellow Douglas Fir Borer

Subject: Beatle identification
Location: Truckee Ca
July 29, 2014 8:57 am
Was on vacation in Truckee CA and found this large beatle under a cushion for the patio chair. It was between the size of a quarter and a fifty cent piece. Slow moving and seemed to be waiting for the morning sun. A bit of a shocker!
Signature: Warrren

Yellow Douglas Fir Borer
Yellow Douglas Fir Borer

Hi Warrren,
This impressive beetle is a Yellow Douglas Fir Borer,
Centrodera spurca, and we have sporadic sightings as postings on our site.  According to the Oregon State University Insect ID Clinic site:  “This is a common long horned beetle in the west that feeds under the bark of Douglas-fir as a larva. The black spots on the sides of the beetle distinguish it from some of the other species that occur in Oregon .”

Thanks for the information. So this is the Beatle that we have had trouble with killing the trees.  Right?

Hi again Warren,
You dropped an “r”.  To the best of our knowledge, the Yellow Douglas Fir Borer is not considered a significant problem regarding killing trees.

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