This is an Emerald Swallowtail (Papilio Palinurus), found in S E Asia. I only caught one glimpse of this at Wisley and was lucky that it settled for a brief moment. The detail is not that sharp but the colours are rather beautiful. It would have to choose a shocking pink flower to settle on - a more muted background would have been preferable!
Settings: F6.3, 1/250sec, EC +1.67, ISO200, aperture priority, handheld.