What's That Bug? does not endorse extermination

Larva state, boring into birch and other trees, not termite!
March 25, 2010
Recently I’ve been tracking penetrations of various trees within our yard. These penetrations have been through scars or lower elevation entry.
Recently I removed another section of birch of what was originally a 4-cluster tree, and now only 2-remain.
The holes are much larger than any termite hole. Once the tree was dissected, I came upon a large headed-to-body ratio larva, whitish in color, some-what segmented. approx lenght 1.” to 1.25″
At a loss and trees are not cheap??
erick at www.ameriturfsystems.com
Back yard tree larva
So-California, inland 20-miles

Flat-Head Borer Larva

Hi erick,
This is the larva of a Metallic Wood Boring Beetle, known as a Flat-Head Borer, in the family Buprestidae.  See BugGuide for more.  Some adults are lovely beetles with bright coloration that are called Jewel Beetles.  Sorry we cannot be more specific as to the species.

Flat-Head Borer Larva

What's That Bug? does not endorse extermination
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