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Butterflies of the Indian subcontinent
Chestnut-streaked Sailor
Neptis jumbah  MOORE, 1857
Family - NYMPHALIDAE
subfamily - LIMENITIDINAE
Tribe - NEPTINI
Neptis jumbah  Orissa, India Haraprasan Nayak
Introduction
There are about 170 Neptis species, of which about 65 occur in Africa, 40+ in the Palaearctic region, 6 in Australia / New Guinea, and about 50 in the Oriental region.
Members of this genus share a common theme of white spots and bars on a blackish ground colour. Distinguishing between the species involves careful study of the configuration of the spots, bars and submarginal lines on both wing surfaces.
Neptis jumbah is known from Sri Lanka, southern and eastern India, Bangladesh and Burma; and probably also occurs in Thailand.
Habitats
This species is found in forested habitats at elevations between sea level and about 800 metres. It is found in both primary and secondary forest, frequenting sunlit glades and forest edge habitats.
Lifecycle
The pale green globular egg is covered with a network of hexagonal ridges, from which arise minute spikes, and is reminiscent of a sea urchin.
The caterpillar spends it's early instars hiding in a curled up dead leaf from which it periodically emerges to feed. The larval foodplants include Fabaceae, Malvaceae and Tiliaceae.
The chrysalis resembles a withered leaf, and is be suspended by the cremaster from a leaf or stem on or near the foodplant.
Adult behaviour
Like all Neptis species, this butterfly is best appreciated when on the wing, as it sails gently, riding on thermals, with periods of gliding punctuated by occasional sharp wing beats. It flies with great precision, weaving it's way in and out through the foliage and branches.
Both sexes periodically alight to bask on the foliage of trees and bushes. Males sometimes imbibe moisture from damp ground, but like the females they are more often seen nectaring at flowers.

 

 

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