Crimson rose is a common butterfly of all over the low country up to mid hills of about 1000ft a.s.l. However it is much plentiful in dry zone than in other areas, even during driest of seasons. They fly close to the ground and flight is fast and straight. Female can be distinguished from the male (see above picture) by having much duller yellowish color spots on the upper side of the hind wing. Also female is generally larger than males. It take part in migrations and Ormiston recorded of seeing fair number of crimson rose butterflies “far out to sea, off the Indian and Ceylon coasts” in November 1914 and stated further that several of them came on board the ship. Its feeding plants in larval stage are Aristolochia bracteolata, Aristolochia indica (සප්සඳ) and Aristolochia ringens (තාරාමල්) of the family Aristolochiaceae.
