Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf This article incorporates text from this source, which is in the public domain. Keys and description
Julius von Kennel, 1921, The Palaearktischen Tortriciden, eine monographische Darstellung. Stuttgart: E. Schweizerbart'sche Verlagsbuchhandlung. 742 pp. - PalaearcticTortricidae, a monograph.pdf at Zobodat 125–127