This is a large pale lemon moth with distinctive pointed hindwings with two reddish-brown spots on the bases. Darker cross-lines on forewings and hindwings. The colours fade as it gets older and it becomes whiter. Wingspan upt to 50mm.
The caterpillar feeds on various broadleaved trees and shrubs.
Flies June to mid-August. It is attracted to light, and is found in woodland, hedgerows, parks and gardens. A fairly common and widespread species.
Photographs taken June 2011 and June 2014, rear garden, Staffordshire.