Gangara thyrsis
| Giant Redeye | |
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| Species: | G. thyrsis
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| Binomial name | |
| Gangara thyrsis (Fabricius, 1775)
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Gangara thyrsis, commonly known as the Giant Redeye, is a butterfly belonging to the family Hesperiidae. It breeds on a number of palm species.
Range
It is found in Sri Lanka and India.
Description
The Male and female dark are chocolate-brown. With a Forewing consisting of bright yellow semi-transparent quadrate spots disposed triangularly, the first is large and occupying half the cell, the second also large, obliquely beneath and partly beyond, the third small and obliquely above the second ; above the last are three smaller spots obliquely before the apex, the two upper being geminated ; in some specimens beneath the subapical spots is a small dot, and on the posterior margin another, both similar to the rest ; cilia at posterior angle brownish-white ; hindwing with the cilia at the anterior angle brownish-white. Underside, forewing irrorated with grey scales near the apex, posterior margin pale brownish-white, spots yellow as above ; hindwing irrorated with grey scales in a series of bands across the wing.[1]
The male of this species presents, on the upperside of each anterior wing, three lines of modified scales, namely, one along the posterior side of the median vein between the origins of its first and second branches, another on each side of the first median veinlet from the origin of this up to the second discal spot, and a third, also double, along an equal portion of the submedian vein, and a thick clothing of setae paler than the groundcolour at the base of the interno-median area, and a similar clothing of paler setae on the middle three-fourths of the sutural area ; and, on the underside, a conspicuous and equally long furry patch of pale fulvous coarse setae divided by the submedian vein.[1]
The wing expanse ranges from 2.5 to 3.25 inches.[1]
Life Cycle
The Larva is greyish-white with a few ochreous dorsal spots and marks. From the body,a loose shaggy filamentous clothing consisting of pure wax is excreted, but which is easily rubbed off when handled, leaving the larva quite naked.[1]
Food Plants
The larvae feed on palms and canes including Cocos nucifera, Calamus pseudotenuis, Calamus rotang, Calamus thwaitesii, Phoenix loureirii, Licuala chinensis and Phoenix humilis.[2] Has also been recorded on Zingiber officinale.[3]
Gallery
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Egg of the Giant Red Eye Butterfly -
Giant Redeye caterpillar emerging from its egg -
The Giant Redeye first instar caterpillar -
The Giant Redeye second instar caterpillar -
Caterpillar -
Caterpillar -
Caterpillar without the wax -
Giant red eye caterpillar in its later instar -
Pupa -
Pupa -
A freshly emerged specimen -
Giant Readeye
References
- ^ a b c d Watson, E. Y. 1891. Hesperiidae Indicae: descriptions of the Hesperiidae of India, Burmah and Ceylon. Madras.
- ^ Kunte, K. 2006. Additions to the known larval host plants of Indian butterflies. J. Bombay Nat. Hist. Soc. 103(1):119-121
- ^ Kalesh, S & S K Prakash (2007). "Additions of the larval host plants of butterflies of the Western Ghats, Kerala, Southern India (Rhopalocera, Lepidoptera): Part 1". J. Bombay Nat. Hist. Soc. 104 (2): 235–238.