Wood-destroying insects

Insects can cause serious damage in wood. The most commonly found wood destroyers are beetles, wasps, ants and termites. If insect infestation has occurred, determination of the species and knowledge of the biological course this insect takes are vitally important for achieving effective treatment and cure.

What are dampwood and drywood insects?

Wood pests can be divided into two categories, dampwood or drywood insects, depending on their biological preferences.
Damp or greenwood insects only lay their eggs on living trees or freshly cut wood. The duration of the larvae development cycle in the wood means that the adult insects can emerge after the wood has been worked and installed in its final application, though any new infestation by dampwood insects at this point is not possible.
Drywood insects, on the other hand, lay their eggs on air-dry wood or wood with low sap content. The larvae infest the wood and the adult insects immediately re-infest the damaged wood or attack new timbers in the building interior.

Damp or greenwood insects include wood breeding bark beetles, like the stripped ambrosia beetle, wood wasps, wood borers, or freshwood long horn beetles like the violet longhorn beetle. The drywood category includes drywood long horn beetles, like the house longhorn beetle, the furniture beetle, powder post beetles, wood boring beetles and termites.


Wood borer beetle
Wood borer beetle larvae
House longhorn beetle
Photos: Dr. Uwe Noldt, Hamburg