The order of Coleoptera is made up of various species of insects. They are winged, with shape, colour, and size quite variable. Their reproductive potentiality is usually quite high. This capacity is for reproduction is increased in warm climates or in heated environments. The most widespread species are limited to a few families, among which are the Lyctidae, the Cerambycidae (the long-horn beetle belongs to this family) and the Anobiidae. The species of this latter family – usually referred to as furniture beetles (wood worms, Nicobium castaneum, Xestobium rufovillosum, Ptilinus pectincornis) – are particularly widespread. In the larva state they feed on substances in the wood. The channels and galleries they create cause serried damage from both a structural and aesthetic point of view. They attach both gymnosperm and angiosperm wood. Therefore, it is possible to find them in all wood supports for paintings. Most often the greatest area of infestation and damage can be found where there is the presence of glue, especially at the joins of the panels and in the priming layers.