The larvae feed on Mignonette, a flower of chalk soil, but they also feed on various Mustard family Cruciferae, and can be reared on the heads of Cauliflower.This is a very rare migrant to Britain, found usually in the Mediterranean region. Baden Powel, a naturalist as well as pioneer, used the dappled pattern on the butterfy’s wings to disguise the plan of Mafeking when dispatched under siege!