Wingspan 40 to 45 mm. Possibly our most immaculate-looking moth when fresh, this is one of the few green species in Britain, and one of the brightest.

It inhabits woodland and parkland.

Flying from June to August, it regularly visits light.

The caterpillars feed on the leaves of oak.

It is distributed widely in England and Wales, as far north as Yorkshire, being locally common in places. In a recent survey to determine the status of all macro moths in Britain this species was classified as local.

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