Large White,
Pieris brassicae.
The adult feeds on Thistles, Bluebell, Bugle, Dandelion Devil’s bit and Field Scabious, Fleabane and Knapweeds. The black marking which curves around the apex of the forewing distinguishes it from it’s smaller relation the Small White where the marking is straighter. Nicknamed the ‘Cabbage white’ due to it’s ability to devour cabbages alarmingly quickly.