Currently viewing the category: "Bark Beetles and Bark Gnawing Beetles"
What's That Bug? does not endorse extermination

Look at what my cats found
July 13, 2010
They were getting along so I knew something was up. They found this running accross the carpet in my bedroom. First time I’ve seen more than a fly inside the house. The weather outside has been really hot the last couple of days, is that related?
Thanks, Devan
Colorado Foothills (suburbia)

Red Flat Bark Beetle

Hi Devan,
Your photo is blurry which often makes identifications difficult, but we are relatively certain that this is a Pole Borer,
Neandra brunnea, one of the Long Horned Borer Beetles in the family Cerambycidae.  According to BugGuide:  “Larvae bore in trees, as well as structural wood (such as poles, crossties) in contact with moist ground. Adults frequently come to lights, though sometimes adults emerge, mate, and lay eggs in the same cavity they occupied as a larva“.

Correction courtesy of Eric Eaton
It is Cucujus clavipes.

Thanks Eric,
According to BugGuide, the Red Flat Bark Beetle,
Cucujus clavipes, is “Found under the bark of ash and poplar, especially recently felled trees” and is “presumably predaceous on other arthropods.

Hi Daniel,
Sorry about the camera but I can say that the pictures on that link look exactly like what I have in front of me.  You rock!

What's That Bug? does not endorse extermination

What’s this bug?
June 2, 2010
This bug was about an inch long and metallic blue, with purple, depending on how you looked at it. I can’t find what it is. Picture attached. Thanks!

Bark Gnawing Beetle

Hi Elizabeth,
We believe this is a Bark Gnawing Beetle in the genus Temnoscheila.  Surprisingly, we came to that conclusion very quickly while browsing BugGuide.  Despite the name, BugGuide also indicates that they are predators and states:  “Larger species can inflict a painful bite if handled carelessly.

What's That Bug? does not endorse extermination

shiny green bug
Sat, May 23, 2009 at 7:44 PM
bit me, just wondered what it is, never seen one before
se wa state

Unknown Ground Beetle

Bark Gnawing Beetle

Dear Leona,
This is a Ground Beetle in the family Carabidae, but we are not having much luck with the species. We will contact Eric Eaton for assistance, and perhaps one of our readers will know the answer.

Correction: One of our readers wrote in with a tip that this is a Bark Gnawing Beetle in the genus Temnoscheila based on images posted to BugGuide.

What's That Bug? does not endorse extermination

red bug
Hi Bugman,
I found this little red guy in some firewood, between the wood and the bark. It’s about the size and shape of a firefly but is a deep magenta color with a little black spot at the posterior and is flatter. Any ideas?

Hi Galen,
This is a Flat Bark Beetle, Cucujus clavipes. These beetles are well adapted for living under loose but close fitting bark. Both adults and larvae feed on insects. Cucujus clavipes is one of the largest and most brilliantly colored species in the family. It is especially common under the bark of freshly felled poplar and ash trees.

What's That Bug? does not endorse extermination