Wingspan 40mm. The ground colour can be quite variable from a cold greyish brown to a warm reddish brown. The cross-lines are not very distinct but the kidney mark is diagnostically square.
Grasslands, in gardens, woodland rides or rough ground. The caterpillar feeds on grasses, plantains and goose-grass.
Status and distribution
Common and widespread throughout most of lowland Britain. Common in Nottinghamshire and at Netherfield Lagoons.
Best time to see
August to September.