Caloptilia robustella (commonly known as new oak slender) is a moth of the family Gracillariidae. It is known from all of Europe, except the Balkan Peninsula.
The wingspan is . To differentiate this species from Caloptilia alchimiella requires microscopic examination of the genitalia.Kuznetsov V.I., 1990 Gracillariidae; in G.S. Medvedev (ed.): Keys to the insects of the europaean part of the USSR, Vol.IV: Lepidoptera, part 2 (english translation), Oxonian Press Pvt.Ltd., New Dehli, 1987Heath, J. & Emmet, A. M. (Hrsg.) (1985): The Moths and Butterflies of Great Britain and Ireland. Volume 2: Cossidae – Heliodinidae. Harley Books, Colchester, Essex.
There are multiple generations per year, with adults on wing between April and November.UKmoths
The larvae feed on Fagus sylvatica and Quercus robur. They mine the leaves of their host plant.
References
External links Lepiforum de