The Duke of Burgundy is one of Yorkshire's rarest resident butterflies. They are dark brown with rows of pale orange markings that give a chequered appearance. Males are darker. The underwings have distinctive, bright pale, rectangular 'spots'. The females lay their eggs on Primroses and Cowslips in sheltered, sunny woodland clearings, rides & coppiced glades normally on limestone soils with rough, lightly grazed grass.
Yorkshire Butterfly Atlas