Carpatolechia decorella is a moth of the Gelechiidae family. It is found in most of Europe, as well as in Turkey, the Caucasus, Kazakhstan, North Africa and on the Canary Islands. The wingspan is 11–15 mm. Adults emerge in July and overwinter. They can sometimes be found again in the following spring. The larvae feed on Quercus and Cornus species. They feed inside a folded leaf their host plant.