Graphium agamemnon, the tailed jay, is a predominantly green and black tropical butterfly that belongs to the swallowtail family. The butterfly is also called the green-spotted triangle, tailed green jay, or green triangle. It is a common, non-threatened species native to Nepal, India, Sri Lanka through Southeast Asia and Australia. Several geographic races are recognized. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. Range Southern India to Saurashtra, northern India (Kumaon to Assam), Nepal, Sri Lanka, Andamans, Nicobars, Bangladesh, Brunei, Myanmar, Thailand, Laos, Cambodia, Indonesia, Vietnam, Singapore, southern China (including Hainan), Taiwan, Japan (Ryukyu Islands), South East Asia to New Guinea, Bougainville, Solomon Islands, and Australia (northern Queensland). Description Male upperside black. Forewing with the following green markings: a spot at the extreme base of the costal margin, a transverse short bar near base of cell and seven spots beyond, two and two except the apical spot which is single; two spots beyond apex of cell; a spot at base of interspaces 1a and 1, followed by two oblique short macular bands; a discal series of spots decreasing in size towards the costa, and a postdiscal series of smaller spots that begins with two in interspace 1; the spots in interspace 7 in both series are out of line, placed outwards. Hindwing: three series of similarly-coloured markings that ran transversely across the wing more or less parallel to the dorsal margin, the upper markings (those in interspace 7) white; a short greenish stripe at the extreme base of the wing. Underside: fuliginous (sooty) brown or brownish black, more or less suffused with pink along the costal margin, on apical area and along the outer margin of the discal markings on the forewing, broadly along the dorsal and terminal margins and at base on interspaces 6 and 7 on the hindwing; markings similar to those on the upperside but less clearly defined and somewhat more grey in tint. Hindwing black, inwardly red-margined spots superposed on the pink area in interspaces 6 and 7. Cilia very narrow, pale pink. Antennae, head, thorax and abdomen black, thorax above and the abdomen on the sides streaked with greenish grey; beneath: ochreous grey touched on the thorax with pink. Females are similar, but with a streak of greenish white along the dorsal margin on both upper and undersides. Race decoratus is found in the Andaman and Nicobar