- Common Name : French Duke
- Scientific Name : Euthalia franciae (Gray)
- Family : NYMPHALIDAE
- Wingspan : 75-90mm
- Colour : Could be mistaken for one of the sergeants but it is greenish on UP with broad discal band on both wings. UN shining, pale greeninsh blue.
- Habit : Prefers heavy forest regions between 1370 to 1950m. Seen on the wing from March to September.
- Larval Host Plants : Data deficient.
- Location : Himalayan West Bengal