Csóka, GY., and Kovács, T. 1999. Xylophagous insects. Forest Research Institute. Erdészeti Turományos Intézet. Agroinform Kiadó, Budapest. 189 pp.
The vast majority of the phytophagous lepidoptera are folivores and very few are xylophagous. 3 of the 7 species belonging to the Cossidae and approximately half of the 35 Sessiidae occuring in Hungary are xylophagous. The larvae of xylophagous species of these two families develop in trunks and branches of living woody plants. While the members of Cossidae are more polyphagous, the species of Sessiidae are rather specialised to a narrow range of foodplants. Quite a few xylophagous species can also be found in many other families (Nepticulidae, Gelechiidae, Tortricidae). These species are usually relatively small and they develop either in twigs and shoots or under the bark.