Aglais caschmirensis (Indian Tortoiseshell) - Sikkim Butterfly
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Aglais caschmirensis (Indian Tortoiseshell)
Place : Chisopani, Singtam, East Sikkim,
Date:November 24, 2014Pic: Shital Pradhan |
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Aglais caschmirensis (Indian Tortoiseshell)
Place : Chisopani, Singtam, East Sikkim,
Date:December 14, 2014Pic: Shital Pradhan |
The Indian Tortoiseshell belongs
to the order Lepidoptera and the family Nymphalidae (the brush-footed
butterflies), classified scientifically as Aglais caschmirensis.
Globally, its origin is rooted in the high-altitude ecosystems of South Asia,
and it is widely distributed across the Himalayan region, stretching from
eastern Afghanistan and Pakistan through northern India (including Himachal
Pradesh, Uttarakhand, and Sikkim) into Nepal, Bhutan, and western China.
Locally known in parts of India
simply as the Himalayan or Indian Tortoiseshell, this resilient species is
commonly found fluttering through open mountain meadows, sunny hillsides, and
forest clearings at elevations ranging anywhere from 1,500 to over 4,000
meters.
Special features of this
butterfly include its strikingly angular, scalloped wing margins and a
brilliant upperside pattern dominated by blocky bands of rich burnt-orange,
yellow, and black. A highly diagnostic row of tiny, glowing blue crescent spots
(lunules) lines the dark borders of its hindwings, contrasting sharply with a
dark, dusky olive-brown base near the body.
In stark contrast to its vibrant upperside, the underside of the wings is a drab, mottled dark brown, providing exceptional camouflage that mimics a dry leaf when the wings are folded shut. Furthermore, as a typical nymphalid, its front pair of legs is greatly reduced and brush-like, meaning it functionally walks on only four legs while navigating the alpine flora.
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