Silkworm Moth (Antheraea sp) Shot near Pallikaranai marsh. Adult stage of this moth does not have mouth parts and dependent on the food reserves from the larval stage for their survival and mating. Wing yes more than half a feet.
Junonia orithya madagascariensis - see and Butterflies and "Flora and Fauna" since ca. 2000 etc. - “If the Butterflies disappeared off the face of the earth - mankind would only have little left to live joyfully” etc.