Usually the disk is made out of Hardwood (Fagus sylvatica). "Calliteara pudibunda" is a monophagous pest of European beech forests ("Fagus sylvatica"). The larvae feed on deciduous trees, including "Fagus sylvatica" and "Quercus" species. It is also reported with beech ("Fagus sylvatica") in Europe. The larvae feed on "Quercus" species, "Castanea sativa" and "Fagus sylvatica". Woodland in the Cantabrian Mountains is generally predominated by beeches ("Fagus sylvatica"). For the beech, European beech ("fagus sylvatica") is dominant. The European beech ("Fagus sylvatica") is the most commonly cultivated. Its favourite symbionic partners are "Fagus sylvatica" and spruce. It is reportedly ectomycorrhizal with "Picea abies", "Pinus sylvestris", "Fagus sylvatica" and "Quercus robur". The European species "Fagus sylvatica" yields a utility timber that is tough but dimensionally unstable. European aspen ("Populus tremula") and rarely European beech ("Fagus sylvatica"). The larvae feed on "Castanea dentata", "Fagus grandifolia" and "Fagus sylvatica". The larvae feed on "Fagus sylvatica", oak, "Prunus spinosa" and bilberry. Up to there are mainly Silver fir ("Abies alba") and European beech ("Fagus sylvatica") forests.