Subject: What is this beetle??
Location: San Diego
January 7, 2017 10:50 pm
Can you identify this bug/beetle
Signature: Thank you
This appears to be a Bark Gnawing Beetle in the genus Temnoscheila and according to BugGuide: “can inflict a painful bite if handled carelessly.” Despite its name, Bark Gnawing Beetles are not injurious to trees, but rather they are predators. Of the family Trogossitidae, BugGuide notes: “Many are predatory on other beetles and their larvae.” The Myrmecos Blog states: “This colorful insect arrived to a blacklight in my backyard a couple of years back, right when I first moved to Tucson. Previously I’d encountered Temnoscheila only under the bark of dead trees, where they apparently prey on the larvae of other beetles. I’ve always wondered why a beetle that spends most of its time secluded in the dark would need such a brilliant metallic sheen, if the color serves a purpose or is just a spandrel.”
Ok I found 2 in my house…… so do you think it came In on some wood? We cut down and split our own…
That is a distinct possibility. We read on iNaturalist that pine is a preferred host.