Pest Guides

Wharfborer

Nacerdes malamura

Appearance

Wharfborer

  • The Wharfborer is 7–14mm in length.
  • This species of wood borer is yellow brown in colour. The tips of elytra (wing case) are black.
  • 3 ridges along the length of the elytra.

Lifecycle

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

Habits

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