Euchromia polymena is a moth of the Arctiidae family. It was described by Linnaeus in 1758. It is found in India and south-eastern Asia, as well as on Sumatra, Java, Sulawesi, Peninsular Malaysia, Borneo and the Philippines. It is also present in the northern part of Western Australia and the Northern Territory.
Adults have black wings with three large orange patches and two small blue marks on the forewings.
The eggs are shiny pale yellow spheres, and laid in groups under a leaf of a foodplant. The larvae feed on Ipomoea species. They are orange with bands of black and brown hairs. The caterpillars live in groups until the last instar which is solitary. source