Yellow brown with tips of elytra (wing case) black.
3 ridges along the length of the elytra.
Lifecycle
Eggs 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 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.