Sapwood beetle

Lyctus brunneus

The brown sapwood beetle (Lyctus brunneus) is a species in the family of boring beetles (Bostrichidae). It originates from tropical regions and is often found in timber import warehouses. It is now one of the most important and most common destroyers of dry wood and is widespread worldwide, as its larvae can develop at a wood moisture content of 7 to 16%. Eggs are laid in vessels (pores) and flight holes in wood (raw and sawn wood, veneers, furniture, etc.) with a rich starch or protein content. European softwoods, but also copper beech, are immune to this pest. After repeated infestation, the surface of the wood appears as if shot (Ø approx. 1 mm), otherwise it remains completely untouched as a paper-thin fine layer, while the wood inside is already completely destroyed. Differential diagnosis with nail beetles and sometimes wood boring beetles is difficult.