This is one of the ambrosia beetles we find in traps and occasionally causing damage in nurseries in the Willamette Valley.
Walter Ebeling. URBAN ENTOMOLOGY: Large California Oak Ambrosia Beetle, Monarthrum scutellare (LeConte) (= Pterocyclon) Click the ambroia beetles link, then the large oak ambrosia beetle link for more info on this beetle.
Page last modified 4/10/09