Appearance
* Wingspan: 100 to 140 mm.⤷ The butterflies resemble the common windmill but are usually larger with broader tails.
⤷ The upper hindwing marginal crescent is white or cream-coloured.
⤷ Sexes similar. The female often has a complete discal band of white spots on the hindwing.
The butterfly is considered to be beautiful in appearance.
Naming
There are five subspecies. The following occur in the Indian neighbourhood:⤷ ''B. d. dasarada'' Moore. Sikkim to Assam. Not rare.
⤷ ''B. d. ravana'' Moore. Kashmir to Kumaon. Not rare.
⤷ ''B. d. barata'' Rothschild. Myanmar. Rare.
Status
Northern India, Nepal, Bhutan, Myanmar, south-eastern China ).The great windmill is not rare or threatened.
Reproduction
The ground colour of the larva varies in shades of grey and has a pattern of black lines. It has an orange osmeterium. The larva has a large number of tubercles arranged in two lateral and two sub-dorsal rows. The third and fourth segments have an additional pair of tubercles. The tubercles all have red tips, except those on the seventh and eighth segments which are almost entirely dirty white and the eleventh segment which has the same colour on just the tips of the tubercles.Food
* ''Aristolochia griffithi''References:
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