Wingspan 35-40 mm. One of our most beautiful moths, especially when freshly emerged. Pinned specimens in identification guides have often lost the attractive green colour, fading to a brownish yellow.

This species frequents woodland and parks.

It flies in September and October and comes to light in small numbers.

The larvae feed on Oak at first on the buds and flowers, later on the leaves.

Widespread, though thinly scattered over most of Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

Fairly frequent but not common in Leicestershire & Rutland. L&R Moth Group status = B (scarce resident or restricted distribution or regular migrant)