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