The wingspan is 9–11 mm.[2] The head is grey mixed with dark brown. Palpi white. Forewings blackish-fuscous; numerous costal strigulae, a spot in disc posteriorly, and two dorsal spots white; a black apical dot; cilia fuscous, terminal half white except on tornus, with a black subapical line. Hindwings are dark grey. The larva is pale green; dorsal line darker; head brown; segment 2 with four black spots.[3][4][5]
Biology
The larvae feed on Betula species. They mine the leaves of their host plant. The mine, larva and pupa cannot be distinguished from those of Parornix betulae.[6]
^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
^ 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, 1987