Lime swallowtail butterfly

The butterfly is tailless and has a wingspan 80–100 mm. Upper side of wings has the ground colour black. The fore wing has the base below cell and basal half of latter so irrorated with yellow scales as to form more or less complete transverse dotted lines, two outwardly oblique yellow spots in cell and a curved spot at its upper apex; a spot at base and another beyond it in interspace; a discal transverse series of cream-yellow spots irregular