The length of the forewings is 14–17 mm. All wings have a generally light grey to purple-grey ground colour. The forewing apex is slightly angular. There are four dark brown stains, of which the second from the inside has a distinctive V-shaped angle extended from the costa. The hindwings show a slightly darkened marginal band. The antennae of the males are combed on both sides.The elongated oval egg initially has a green colour, which later turns into brown-red. It has an irregular polygonal network and shows small white warts at the angles.
The caterpillars initially have a greenish or bluish colouration. Before pupating, they take on a purple-brown colour. They are provided with black, bristled point warts. The dorsal line is dark and white lined, lateral stripes are wide yellow.The pupa is very slim and reddish brown. At the cremaster end, it is briefly forked.
