Cydia illutana is a small moth of the family Tortricidae. It is found from western and central Europe (Great Britain, the Netherlands, Austria, Germany and France), north to Scandinavia (Denmark, Norway, Sweden and Finland) and east to Russia (Siberia). The wingspan is 12–14 mm. Adults are on wing in May and June. There is one generation per year. The larval feeding activity disrupt the maturing of the cones and the ejection of the seeds of the host plant.