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Powderpost beetles (Bostrichidae, formerly Lyctidae) produce much finer frass (left) than deathwatch beetles (Anobiidae).

Powderpost beetles, a subfamily of beetles in the family Bostrichidae called the Lyctinae, produce much finer dust (left) than other wood borers such as deathwatch beetles in the Anobiidae family. Credit: Robin L. Tabuchi — Credit: Robin L. Tabuchi

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