Subspecies in India
No subspecies are listed under this species.
Conservation and Special status
This species is legally protected in India under Schedule I of the WildLife (Protection) Amendment Act, 2022.
Photo Gallery and Species Biology
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This species has been recorded so far from Arunachal Pradesh, Manipur, and Nagaland, within the Indian limits.
This species is legally protected in India under Schedule I of the WildLife (Protection) Amendment Act, 2022. It is very rare, known only from Manipur and Naga Hills in India before, and now from E. Arunachal Pradesh. It appears to be rare throughout its range, from NE India to Indo-China.Information such as the precise locality is being withheld to protect this population from illegal collecting until forest officials and other authorities put safety measures in place.
| State | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | No date |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Andaman and Nicobar Islands UT | |||||||||||||
| Andhra Pradesh | |||||||||||||
| Arunachal Pradesh | 1 | 3 | |||||||||||
| Assam | |||||||||||||
| Bihar | |||||||||||||
| Chandigarh | |||||||||||||
| Chhattisgarh | |||||||||||||
| Dadra & Nagar Haveli UT | |||||||||||||
| Daman & Diu UT | |||||||||||||
| Delhi | |||||||||||||
| Goa | |||||||||||||
| Gujarat | |||||||||||||
| Haryana | |||||||||||||
| Himachal Pradesh | |||||||||||||
| Jammu and Kashmir UT | |||||||||||||
| Jharkhand | |||||||||||||
| Karnataka | |||||||||||||
| Kerala | |||||||||||||
| Ladakh UT | |||||||||||||
| Lakshadweep | |||||||||||||
| Madhya Pradesh | |||||||||||||
| Maharashtra | |||||||||||||
| Manipur | 1 | ||||||||||||
| Meghalaya | |||||||||||||
| Mizoram | |||||||||||||
| Nagaland | |||||||||||||
| Odisha | |||||||||||||
| Puducherry UT | |||||||||||||
| Punjab | |||||||||||||
| Rajasthan | |||||||||||||
| Sikkim | |||||||||||||
| Tamil Nadu | |||||||||||||
| Telangana | |||||||||||||
| Tripura | |||||||||||||
| Uttar Pradesh | |||||||||||||
| Uttarakhand | |||||||||||||
| West Bengal | |||||||||||||
| Total | 1 | 4 |
Not known in India.
Page citation
Kunte, K. 2026. Byasa crassipes (Oberthür, 1893) – Black Windmill. In Kunte, K., S. Sondhi, and P. Roy (Chief Editors). Butterflies of India, v. 4.12. Published by the Indian Foundation for Butterflies. URL: https://www.ifoundbutterflies.org/index.php/byasa-crassipes, accessed 2026/05/24.