The Tailed Jay aka Green Spotted Triangle (Graphium agamemnon)

The Tailed Jay is a green-and-black tropical butterfly belonging to the swallowtail family. The black forewings are dotted with green spots.  It is usually found feeding upon the nectar of lantana. A strong flier, the butterfly is regarded as a high energy cross pollinator.
Photo by Chandana Roy
Place: Indore, MP, India