Ceylon birdwing  (Troides darsius)

The Ceylon birdwing is one of the largest butterflies of Sri Lanka (2). Like most other Troides birdwings, the male is adorned with bright golden-yellow markings on the hindwings, which contrast starkly with the velvety black forewings and interjecting black veins (2). The female is larger than the male, and has a different arrangement of yellow markings on the hindwing, and pale stripes on the forewing (2) (3).