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Fir Engraver Beetle tracks

Scolytus ventralis


Natures art! These beetle tracks are made by the Fir engraver beetle. They seek out distressed fir trees in western North America. Pics 3 and 4 show the presence of red-brown boring dust in the crevices, another sign of the Fir Engraver Beetle.


Spotted on a Douglas fir tree and its bark that had been recently cut down next to a large wetland area in western King County, Washington.


I assume this tree was cut down because it was dead and was in close proximity to a road. It also was in close proximity to a large wetland and was probably exposed to high winds. The reason for the tree's sickness is not known but I can only assume it was the close proximity to the wetland and wind exposure. The beetles will search out distressed trees and will simply finish them off.

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Brian38 2 years ago

Thanks for the kind words, Neil.

Neil Ross
Neil Ross 2 years ago

Amazing spotting, Brian. Excellent notes and pics.

Brian38 2 years ago

Thanks, jazz.mann.

jazz.mann 2 years ago

very cool

Spotted by

Federal Way, Washington, United States

Spotted on May 2, 2021
Submitted on Jun 5, 2021

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