This moth has distinctive heart and dart shaped markings on its forewings. There are some variations, but a constant narrow black band across the collar of the thorax identifies this species when compared to the Heart & Club (Agrotis clavis) which is similar. Wingspan 30 to 40mm. Forewing length 15 to 19mm.
The caterpillar feeds on various herbaceous plants.
It flies In two generations, May to August, and in September further south. Readily attracted to light, sometimes in great numbers. Also feeds at sugar and flowers. Found almost anywhere. Common and widespread, and one of the most abundant larger moths in Britain.
Photographs taken July 2015 and June 2016, rear garden, Staffordshire.