Subject: beetle
Location: Hesperia, California
August 13, 2014 1:03 pm
what kinda of beetle is this.
i have alot of mealworm beatles
running wild from my own breeding.
could it have bred with a wild beetle
Signature: Brian

Stout's Hardwood Borer

Stout’s Hardwood Borer

Dear Brian,
Your image is not terribly clear, but this sure looks like a Stout’s Hardwood Borer,
Polycaon stoutii, to us.  We got that common name from Charles Hogue’s Insects of the Los Angeles Basin, but BugGuide refers to it as the Black Polycaon and has very little information about it.  Hogue on the other hand writes extensively about the Stout’s Hardwood Borer.  Hogue writes that they “appear in the fall (September) in unlikely places, such as in the hallways and rooms of new buildings, in warehouses, and in homes.  Their occurrence is explained by their breeding habits.  The larvae are wood borers that feed within various hardwoods such as oak, California Laurel, alder, maple, and eucalyptus — construction woods that are often used in building boxes, shipping crates, storage racks, and the slats used behind scoustic ceiling tiles;  the larvae will also infest finished wood products such as cupboards, cabinets, and furniture.  The adult Stout’s beetles may emerge from these products after the construction is completed and even after the product has been finished. … There is no evidence that the species reinfests lumber or manufactured wood products once the adults have emerged from them.”

Location: Hesperia, California

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