Blue Nawab (Polyura schreiber)
The Blue Nawab is a species of majestic and magnificent-looking butterfly found in several countries of tropical Asia, including India in several subspecies, or even races. Because of their restless nature, photographing these brush-footed butterflies is often a challenge.
Scientific Classification
- Family: Nymphalidae
- Genus: Polyura
- Scientific Name: Polyura schreiber
Description and Identification
Caterpillar
They are usually green. The mature larvae of the various species of these butterflies vary in patterns and markings, but all the specimens feature a large head bearing a crown of 4 long horn-like protrusions. A yellow band on the seventh segment can also be seen.
Pupa
The chrysalis is usually green with darker segment marks and venation with a longitudinal row of red dots on each side. It remains hung with the tip attached to a branch of the host plant.
Adult Butterfly
Sexual Dimorphism: Not vividly present (females are larger)
Color and Appearance: When the wings are open, the dorsal side displays a white median band ornamented with blue. When the wings are closed, it shows a silvery underside decorated with light brown and violet to purple patterns. Two pairs of tails can also be seen on the hindwings
Average wingspan: 60 to 80 mm
Flight pattern: Strong and fast flaps
Eggs
Spherical and smooth with pale yellow and purple marks, laid one at a time
Quick Facts |
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| Distribution | From the southern parts of India and Assam through Myanmar, Tenasserim, and Southeast Asia to southern China and to Java, Indonesia |
| Habitat | Urban parks and gardens, forested areas and also within mangrove areas |
| Lifespan of adults | Unknown |
| Host plants | Varies between subspecies |
| Adult diet | Flower nectar; males have been observed seen feasting on decomposing animal matter, as well as overripe fruits |
Did You Know?
They get their name ‘Nawab’ for their ‘royal grace’ which the butterfly enthusiasts often find to be majestic.
Dr. James Watuwa on July 16, 2019.
Butterfly Team
