Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Poplar bud-worm (Gypsonoma oppressana) is a moth of the Tortricidae family. It is found on Madeira and in central and southern Europe, from the Trans-Caucasus to Kazakhstan and Tajikistan. The wingspan is 12-15 mm. Adults are on wing in June and July. The larvae feed on Populus nigra, Populus alba and Populus tremula and is considered a minor pest on these species. Young larvae feed on the underside of the leaf in an angle of the veins, living beneath a silken web and eating the surface of the leaf. Later they feed in the buds, moving from bud to bud.