sorry no photos ,wish I thought to take some ! we foolishly did a total renovation in charante maritime , consequently have seen many of the brutes, they honeycombe into old wet/damp wood, if you dig up any old rotten wood , break it bang it on a stone , or perhaps when sawing old wood, you might disturb hundreds of tiny (ant sized) white maggots, or more occasionally find a "queeen " a horrible thing about the size of your little finger. on old oak beams you see pale whitish tracks where they have scratched the surface , or the beam might be honeycombed usually horizontally along the beam., if the wall is damp they may get into the end of the beam inside the wall (out of sight ) or again out of sight in the loft on the upper side of rafters. regards dirk