- Common Name : Common Windmill
- Scientific Name : Atrophaneura polyeuctes (Doubleday)
- Family : PAPILIONIDAE
- Wingspan : 110-140mm
- Colour : Large, red-bodied black swallotail. Tail with a double red spot. UP of wings black.
- Habit : Slow, lazy, sailing flight, often high above trees, in leisurely manner in the river valleys. Seen in forests from 300 to 1500m. On the wings between March and Nov. Comes to flowers.
- Larval Host Plants : Aristolochia punjabensis, Aristolochia griffithi, A. shimadai
- Location : North Bengal