Common butterfly found in gardens and open areas, especially in lowlands and up to about 500m. It is a migratory species and during the migratory season (North East Monsoon period) it can be seen in all elevations of the island usually as swarms. It often use to settles on the underside of leaves so that it is difficult to distinguished it from the foliage. Also sometimes settles in swarms on damp earth to absorb minerals. Its larval food plant is common Peni Tora (Cassia occidentails) of family Fabaceae. It is now generally accepted that former African Emigrant (Catopsilia florella) is conspecific with C. pyranthe.