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Ypthima Singala
''Ypthima singala'', the jewel four-ring or Sinhalese five-ring, is a species of Satyrinae butterfly. It is endemic to Sri Lanka and south India. Description Adult ''Ypthima singala'' show sexual dimorphism. In male specimens, the dorsal surface of both wings is brownish and one large eye-spot and a series of smaller eyespots are found on the ventral surface of the forewing. This large eyespot can be seen very faintly on the dorsal surface. In female specimens, a prominent eye-spot is found on the dorsal surface of the forewing. Few small eyespots are found above the outer margin of the hind wing. Larval food plant is ''Axonopus compressus ''Axonopus compressus'' (syn. ''Axonopus compressus'' (Sw.) P.Beauv. var. ''australis'' G.A.Black, ''Milium compressum'' Sw., ''Paspalum compressum'' (Sw.) Nees, ''Paspalum platycaule'' Willd. ex Steud., ''Paspalum platycaulon'' Poir.) is a speci ...''. References Butterflies of Sri Lanka Butterflies described in 1868 Ypthima ...
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Satyrinae
The Satyrinae, the satyrines or satyrids, commonly known as the browns, are a subfamily of the Nymphalidae (brush-footed butterflies). They were formerly considered a distinct family, Satyridae. This group contains nearly half of the known diversity of brush-footed butterflies. The true number of the Satyrinae species is estimated to exceed 2,400. Overview They are generally weak fliers and often shun bright sunlight, preferring moist and semishaded habitats. The caterpillars feed chiefly on monocotyledonous plants such as palms, grasses, and bamboos. The Morphinae are sometimes united with this group. The taxonomy and systematics of the subfamily are under heavy revision. Much of the early pioneering work of L. D. Miller has helped significantly by creating some sort of order. '' Dyndirus'' (Capronnier, 1874) is a satyrid ''incertae sedis''. Other than this genus, according to the latest studies on the classification of Nymphalidae, all satyrines have been assigned to one of t ...
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Sri Lanka
Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, and southeast of the Arabian Sea; it is separated from the Indian subcontinent by the Gulf of Mannar and the Palk Strait. Sri Lanka shares a maritime border with India and Maldives. Sri Jayawardenepura Kotte is its legislative capital, and Colombo is its largest city and financial centre. Sri Lanka has a population of around 22 million (2020) and is a multinational state, home to diverse cultures, languages, and ethnicities. The Sinhalese are the majority of the nation's population. The Tamils, who are a large minority group, have also played an influential role in the island's history. Other long established groups include the Moors, the Burghers ...
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India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations average to between 73–55 ka.", "Modern human beings—''Homo sapiens''—originated in Africa. Then, int ...
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Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ...
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Axonopus Compressus
''Axonopus compressus'' (syn. ''Axonopus compressus'' (Sw.) P.Beauv. var. ''australis'' G.A.Black, ''Milium compressum'' Sw., ''Paspalum compressum'' (Sw.) Nees, ''Paspalum platycaule'' Willd. ex Steud., ''Paspalum platycaulon'' Poir.) is a species of grass. It is often used as a permanent pasture, groundcover, and turf in moist, low fertility soils, particularly in shaded situations. It is generally too low-growing to be useful in cut-and-carry systems or for fodder conservation. While not optimal, it is occasionally used for football fields especially those which are not for elite competitions or where only a low level of maintenance can be done. Common names * English: broadleaf carpetgrass, carpet-grass, American carpet grass, tropical carpet grass, blanket grass, lawn grass, Louisiana grass, savanna grass, Kearsney grass, * Fijian: ''kambutu ni vavalangi'' * French: ''buffalo américain'' * Spanish: "Grama Brasilera (Arg.)", ''alfombra'', ''grama bahiana'', ''grama trenz ...
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Butterflies Of Sri Lanka
Sri Lanka is home to 245 species of butterflies with 23 of these being endemic to the island. Of the 245 species, 76, are listed as threatened nationally, while Ceylon Rose is designated as critically endangered. General description The majority of species are found in the foothills (up to elevation). A much smaller number of species are found above , while 20 species of butterfly are restricted to the low lying dry zone (below elevation). The number of butterflies peaks in two seasons during the year. The first of these is during the Southwestern monsoon in the months of March to April. The second is during the Northeastern monsoon which continues from September to October. Within Sri Lanka, thlatest revision of lepidopteransdescribed 1903 species with 58 families of butterflies and moths. Out of these 1903 species, 208 species are butterflies and 1695 species are moths. The family-wise number of butterfly species are : History of studies on butterflies The first s ...
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Butterflies Described In 1868
Butterflies are insects in the macrolepidopteran clade Rhopalocera from the order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The group comprises the large superfamily Papilionoidea, which contains at least one former group, the skippers (formerly the superfamily "Hesperioidea"), and the most recent analyses suggest it also contains the moth-butterflies (formerly the superfamily "Hedyloidea"). Butterfly fossils date to the Paleocene, about 56 million years ago. Butterflies have a four-stage life cycle, as like most insects they undergo complete metamorphosis. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very rapidly, and when fully developed, pupate in a chrysalis. When metamorphosis is complete, the pupal skin splits, the adult insect climbs out, and after its wings have expanded and dried, it ...
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