Common in broad-leaved woodland, areas with scattered trees, parks and gardens, throughout the British Isles, but under-recorded due to its late flight season; well distributed and common in Hampshire and on the Isle of Wight. Wingspan 46-50 mm. Unmistakable. Larva feeds on various broad-leaved trees, including Oak, Hawthorn, Blackthorn, Apple, Dog-rose, Birch, Hazel, Willow and Poplar, over-wintering as an egg.