Graphium sarpedon, the common bluebottle, is a species of swallowtail butterfly found in South and Southeast Asia, as well as parts of Australia.
There are approximately 15 subspecies with differing geographical distributions.
Upperside opaque black. Fore and hind wings crossed from above the tornal area on tho hind to near the apex of the fore wing by a semi-hyaline broad pale blue medial band which is broadest in the middle, more or less greenish and macular anteriorly; the portion of the band that crosses interspaces 6, 7 and 8 on the hind wing white; beyond the band on the hind wing there is a sub-terminal line of blue slender lunules. Underside similar, ground-colour dark brown. Hind wing: a short comparatively broad sub-basal band from costa to sub-costal vein, and the postdiscal area between the medial blue band and the sub-terminal lunules velvety black traversed by the pale veins and transversely, except in interspaces 6 and 7, by narrow crimson lines; lastly, a crimson spot near the tornal angle with an admarginal yellowish-white spot below it. Antenna, head, thorax and abdomen brown, the head and thorax suffused with greenish grey; beneath: the palpi, thorax and abdomen touched with dingy white, the abdomen with two whitish lateral lines.
Male has abdominal fold within grey, furnished with a tuft of long, somewhat stiff white hairs.
Race teredon, Felder. (South India and Sri Lanka) is distinguishable in both sexes by the narrower medial band that crosses both fore and hind wing. Colour brighter, the contrast between the green of the upper and the blue of the lower portion of the medial band more vivid. Hind wing more produced posteriorly at apex of vein 3, where it forms an elongate tooth or short tail.
Variously reported with wingspans between 55 and 75 mm, the common bluebottle has black upper wings and brown lower wings. Both fore and hind wings are marked by a central spot in the form of a blue or blue-green triangle, with apex pointing toward the body.
The common bluebottle is known for quick flight and rapid reactions. It is difficult to catch.