What's That Bug? does not endorse extermination

Subject: what’s this bug
Location: Lassen National Forest in northern california
August 14, 2015 7:56 pm
Lassen National Forest in northern california in August 2015 elevation 6500 ft near a lake
Signature: Bugman

Flat-Faced Longicorn

Flat-Faced Longicorn

This is a Longhorned Borer Beetle or Longicorn in the family Cerambycidae, and it is a Flat-Faced Longhorn in the subfamily Lamiinae.  Though we are not certain of the species, we believe it is a Spotted Tree Borer, Synaphaeta guexi, an impressive species and every year we get one or two identification requests from California.  We wish you had submitted a dorsal view as it is easier for us to identify a beetle with a dorsal view.  Compare your individual to this image from BugGuide, also from Lassen.

Flat-Faced Longicorn

Flat-Faced Longicorn

thank you for the quick response and the coaching on best angle for a picture.
Mark Rieger

We should also add that your images are quite stunning, and we did not mean to imply that they are substandard.  We are certain that any coleopterists out there would have no trouble providing a species identification based on your images, but we have no such credentials, so for our staff, dorsal views of insects are the best for identification purposes.

What's That Bug? does not endorse extermination
Location: Lassen National Forest, California

Leave a Reply

Your email address will not be published. Required fields are marked *