The Emerald Swallowtail, Emerald Peacock, or Green-banded Peacock (Papilio palinurus) is a butterfly of the genus Papilio belonging to the Papilionidae family. It is native to southeast Asia, but regularly kept in butterfly zoos around the world.
The genus name Papilio comes from the Latin word papilio meaning butterfly. The species name palinurus derives from Palinurus, the name of the pilot of Aeneas’s boat in the Latin epic poem, written by Virgil.
Papilio palinurus has a wingspan reaching about 8–10 centimetres (3.1–3.9 in). The dorsal sides of the wings are covered by a powder of green scales and the background vary from dark greenish to black, with broad bright emerald green metallic bands. The undersides are black with orange, white and blue spots along the edges of hind wings, that show extended tails at the end.
The flight of these butterflies is swift and quite fast. Caterpillars feed on plants of genus Euodia belonging to the Rutaceae, commonly known as the rue or citrus family.
This species can be found primarily in South East Asia, particularly in Burma – Peninsular Malaysia, Sumatra, Borneo, Indonesia (Simeulue, Island of Nias), Philippines (Basilan, Palawan, Balabac, Cuyo, Busuanga, and Dumaran).
Papilio palinurus lives in Asian primary forests. source