Local in broad-leaved woodland, favouring ancient woodland in rural areas, occasionally in gardens throughout much of southern England and Wales. In Hampshire and on the Isle of Wight locally fairly common in deciduous woodland in all three vice-counties. Wingspan 33-39 mm. Fairly unmistakable. Larva feeds on Pedunculate Oak, Hazel, Hawthorn and Birch, over-wintering as a pupa.