Common often abundant, in all types of habitat throughout the British Isles. Widespread and very common in Hampshire and on the Isle of Wight. Wingspan 35-44 mm. The presence of the dark mark on the patagia distinguishes Heart and Dart from the occasional female Heart and Club A. clavis which resembles it (MBGBI Vol 9). Larva feeds on herbaceous plants such as Ribwort Plantain and Fat-hen.
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