Wingspan 45 to 56 mm. The upperwing is quite variable, and the hindwings are semi-translucent, giving the appearance of a pearly sheen.

A migrant species in Britain.

Although most frequent in September and October, has appeared in all months.

The larvae are not usually found in Britain, but are believed to feed on a number of herbaceous plants.

Varying in numbers, but usually coinciding with arrivals of other European migrants. It can occur almost anywhere in Britain, but is generally more common in the south. In a recent survey to determine the status of all macro moths in Britain this species was classified as a migrant.

Occasional in Leicestershire and Rutland. L&R Moth Group status = C (very scarce resident or rare migrant).