woodworm

Woodworm is the common name for the larval stage of several species of wood-boring beetles that infest timber. The term is most often applied to larvae of the furniture beetle (Anobium punctatum) and related species, but it can also refer to larvae of powderpost beetles (Lyctidae) and longhorn beetles (Cerambycidae). These larvae bore into sound and sometimes damp wood, feeding on cellulose and other plant matter as they grow.

Life cycle: Female beetles lay eggs in cracks or crevices in wood. When hatched, larvae burrow tunnels through the wood, often staying inside for months to years depending on species, temperature and moisture. They pupate within the wood, and adults emerge by chewing small exit holes, leaving characteristic round or oval holes about 1–3 mm in diameter.

Signs and impact: Infestations cause structural weakening in timbers and decay of wooden furniture. Visible indicators include exit holes and fine sawdust-like frass extruding from cracks or holes. Infestation is more likely in damp, poorly conditioned wood and can spread if untreated.

Prevention and control: Reduce moisture, improve ventilation, and promptly repair water damage. In severe cases, damaged wood may need replacement or professional treatment, such as heat treatment or fumigation. Insecticides may be used by professionals but are less effective if wood is not properly dried and accessible. Regular inspection of house timbers and furniture helps early detection.