dry wood destroyed by lyctid powderpost beetles. close-up on round holes and tunnels with flour-like powder below the wood surface

background bark beams beetle beetles below board bole borer broken brown bug close closeup crack damaged detail dry dust egg falling flour food frass holes home insect insects larva like lyctid nature pests post powder powderpost pupa reduce round sawn seasoned small surface termites timber tree tunnel tunnels wood wooden worms