Common in a wide range of habitats, including calcareous grassland, woodland rides and gardens throughout the British Isles. Widespread and fairly common in Hampshire and on the Isle of Wight. Wingspan 44-50 mm. Has been compared to Reddish Light Arches A. sublustris, but Light Arches appears lighter and better marked in comparison. Larva feeds on flowers and seeds of Annual Meadow-grass and other grasses.
The abundance in each month is indicated as follows:
No records Very occasional Irregular Uncommon Off-peak, but not unusual Off-peak, but not unusual Main flight time