common birdwing (Troides helena) Pompeoptera cerberus & Pompeoptera pompeus
Date	1899
Source	Icones Ornithopterorum Volume 2 http://archive.org/stream/IconesornithoptIIRipp#page/57/mode/1up
Author	Robert Henry Fernando Rippon (d 1917)
Source: https://commons.wikimedia.org/wiki/File:PompeopteraCerberusRippon.jpg
The common birdwing (Troides helena) is a butterfly belonging to the family Papilionidae. Globally it is found in Nepal, India, Bangladesh, Myanmar, peninsular and eastern Malaysia, Singapore, Indonesia, Laos, Kampuchea, Thailand, Vietnam, southern China including Hainan, and Hong Kong.