Apoderus coryli length of about . This species is rather similar to the oak roller weevil ("Attelabus nitens") and "Apoderus erythropterus", that shows a black pronotum. All three species produce leaf wraps into which the eggs are laid. Adults can be found between May and September. They feed on leaves of the host plant, the hazel ("Corylus avellana"), hence the Latin name "coryli" of the species, meaning hazelnut. Only in exceptional cases other deciduous trees, such as alder ("Alnus" species), birch ("Betula" species), common hornbeam ("Carpinus betulus") , common beech ("Fagus sylvatica") and hop-hornbeam ("Ostrya carpinifolia") are used as host plants. After
Stigmella hemargyrella Stigmella hemargyrella Stigmella hemargyrella is a moth of the Nepticulidae family. It is found in most of Europe, except Iceland, Norway, Finland, Portugal and most of the Baltic region. The moths (imago) are bivoltine flying from April to May and again from July to August and can be found resting on trunks. The wingspan is 5–6 mm. The egg can be laid on either side of the leaf and the pale yellowish-white larva feed, within a mine on "Fagus sylvatica" and "Fagus sylvatica orientalis". The mine is a sinuous gallery and at the early state is relatively narrow with a