Papilio krishna thawgawa
 
Papilio krishna, the Krishna peacock, is a large swallowtail butterfly found in forests in China, north east India, Myanmar and Vietnam. A large beautiful butterfly with a prominent swallowtail, the Krishna peacock has a wingspan of 120 to 130 mm (4.7 to 5.1 in)  It has black upper forewings with a thin prominent yellow discal band running across the wing, parallel to the body.
The upper hindwing has a large blue discal patch which tapers off into a greenish yellow band from its lower edges inwards towards the dorsum. It has a series of red-mauve capped crescents (usually five). The upper hindwing discal band appears on the under hindwing also as a prominent curved yellow discal band.