The wingspan is 18–27 millimetres (0.71–1.06 in).[3] The forewings are distinctly dilated, pale brownish-ochreous, costal half suffused with white, with a few dark fuscous scales; first line indicated by a straight oblique series of three large dark fuscous dots; second pale, obscurely dark-edged; two large dark fuscous transversely placed discal dots. The hindwings arenlight fuscous. The larva is pale green; dorsal and subdorsal lines pink; spiracular pink, interrupted; head reddish-brown; plate of 2 posteriorly brownish: in flower-heads of .Cardwus lanceolatus.[4][5][6][7]
There is one generation with adults on wing from July to August.[8]
^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