Duke of Burgundy Fritillary. 1, 2, 4 male; 3, 5 female.
Milkweed Butterfly. 6 male.
Pl. 121.
Duke of Burgundy Fritillary.
Egg enlarged; caterpillar and chrysalis.
Besides the plants adverted to above, the caterpillars will eat raspberry (Rubus idæus) and cinquefoil (Potentilla fragariastrum and P. reptans).
The butterfly is pretty generally distributed in Great Britain, but does not seem to be common in Ireland, as Kane only mentions two examples, from Killarney. It is found in May and June on chalk downs and other hillsides, especially in the hollows and sheltered nooks, also in and around woods, and in rough fields. On dull days and at night it may be found sitting, with the wings erect over the back, on various seed-heads, etc.