Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Beech Moth (Cydia fagiglandana) is a moth of the Tortricidae family. It is found in most of Europe. The wingspan is 12 16 mm. The moth flies from April to September depending on the location. The larvae feed on beech, and sometimes also oak.A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth (about ten times the number of species of butterfly), with thousands of species yet to be described.