Phtheochroa sodaliana, the buckthorn conch, is a species of moth of the Tortricidae family. It is found in most of Europe (except the Iberian Peninsula and part of the Balkan Peninsula) and in Russia (Uralsk) and Lebanon. The habitat consists of dry pastures, heathland and fens. The wingspan is 14–17 mm. Adults have been recorded on wing from May to June. The ground colour of the wings is white with a red-brown apical spot and blackish and metallic-grey markings. The larvae feed on Rhamnus cathartica and Frangula alnus. They spin the berries together.