The wingspan is 18–23 mm. The head and thorax are white, patagia deep brown. Forewings with apex very strongly falcate; deep ochreous-brown, lighter towards costa anteriorly ; a light yellmv dorsal streak from base to tornus, edged above by a fine white line which is posteriorly bent obliquely upwards to disc at 2/3. Hindwings are rather dark grey. The larva is pale yellowish-green ; dorsal stripe broad, brown-reddish.[1]
The moth flies from June to September depending on the location.
^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