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Nacerdes malamura


  • 1/4" – 9/16" in length.
  • Yellow brown with tips of elytra (wing case) black.
  • 3 ridges along the length of the elytra.


  • Eggs are laid on damp, decaying timber.
  • Larvae bore through wood for about 9 months then emerge in Summer.


  • Larvae require wood to be constantly wetted so that fungi break down the wood fibres.
  • Two main sources of infestation in buildings — structural timbers where rainwater leakage occurs, and pieces of timber buried below concrete foundations, paths and pedestrian precincts.

Treating woodworm in commercial buildings