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Wilted and debarked elm tree branches infested with unidentified beetles (A), a sample piece of elm wood with the gallery and holes (B), and an unidentified beetle larva captured from a hole in the sample piece of elm wood (C). Morphology of colonies formed on potato dextrose agar (D), malt extract agar (E), and oatmeal agar (F) after growth of the isolate DUCC 400 obtained from the larva shown in (C) for 14 days at 25℃.
