Wingspan 25-28 mm. This species resembles the Common Wave (C. exanthemata) but is generally whiter with more parallel cross-lines on the forewing.

It occupies woodland, copses and similar habitats.

During the day it rests in low herbage and can easily be disturbed, but its natural flight time is from dusk onwards, when it can be found between May and August in one or two generations.

Larvae feed on a number of trees and shrubs, especially Birch.

Commonly distributed throughout Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

Fairly common in Leicestershire and Rutland. L&R Moth Group status = A (common and resident)