Wingspan 55-70 mm.
A reasonably common species in the southern half of Britain, it is most frequent in the London area, where there are still extensive tree-lined avenues.
It has a distinctive scalloped-edged forewing, subtly coloured in pinkish and green. The central dark band is quite variable in size and extent.
Occupying woodland and suburban habitats, it flies in May and June, and often comes to light.
The larvae feed on lime (Tilia) and a number of other deciduous trees.