Scientific Name : Princeps protenor (Fruh.)
Family : PAPILIONIDAE
Wingspan : 100 - 140 mm
Colour : Upperside is velvety indigo-blue black, duller on the fore wing than on the hind wing. Fore wing underside is dull black.
Habit : Primarily a forest butterfly. Flies in a leisurely manner keeping close to the undergrowth, fond of damp patches, visits flowers and gardens.
Larval Host Plants : Zanthoxylum sp. and Citrus sp.
Location : North Bengal