Bostrichid Powderpost Beetle
Bostrichid powderpost beetles are 1/8 to 3/4 inch long and reddish brown to black. Their bodies are elongated and cylindrical with a roughened thorax. Heads are concealed by the pronotum from above. The antennae are short with three or four enlarged, saw toothed terminal segments. The larva is white and C-shaped with no spines on the body. The life cycle is one year. Bostrichids infest seasoned softwood and hardwood, especially unfinished floors, window sills, and furniture. Bamboo items are especially susceptible to attack by some species of Bostrichid beetles. The round emergence holes are 1/8 to 3/16 inch in diameter. Sawdust like frass sticks together and is found tightly packed in galleries but not in entrance holes.