Identification of pests in timber

With a few exceptions it is insect larvae that attack timber, but normally these are difficult to find, and even if one does manage to extract one, it is difficult to identify with any degree of certainty.

The adult insects only appear for a short period, usually in summer, and so in most cases the culprit has to be identified from the tracks and signs it leaves in the timber. The type of tree, whether deciduous or coniferous, and its age and condition, may also provide clues.