Nationally scarce (Nb) on chalk downland and limestone cliffs in England, from Kent to Somerset and in Norfolk. On the Isle of Wight, occurs on the chalk downs, where known since the middle of the nineteenth century. First recorded in Hampshire in 1989, surprisingly in VC12 at Micheldever; since that time there have been very few inland records. Most records, however, are most likely to result from primary immigration from the continent. Wingspan 26-30 mm. Unmistakable. Larva feeds on Bird's-foot Trefoil, White Clover and Common Restharrow.