About Euchromia polymena Linnaeus, 1758
Description: For Euchromia polymena, veins 3 and 4 of the hindwings extend from the angle of the cell. The body is black, with a blue spot on the vertex of the head. The frons is white, and each tegula has a white spot. The collar, as well as the 1st, 4th, and 5th abdominal segments, are crimson, while the 2nd, 3rd, and 6th abdominal segments are edged with metallic blue. The forewings have a basal metallic-blue spot and two spots at the end of the cell. They also have a large sub-basal spot, a bifid medial spot, and a quadrified post-medial orange spot. The hindwing has a trifid basal orange spot and a quadrified post-medial orange spot. The coxa of the forelegs and three spots on the pectus are white. The larva is reddish with red tubercles. It has long tufts of hair on its anterior and posterior sections, and shorter dense medial dorsal tufts. The pupa develops inside a hairy cocoon. Ecology: The eggs are shiny pale yellow spheres, laid in groups on the underside of a food plant leaf. The larvae feed on species in the genus Ipomoea. The caterpillars live in groups until their last instar, when they become solitary.
