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Esme Cyaneovittata
''Esme cyaneovittata'' is damselfly in the family Platycnemididae. It is endemic to Western Ghats in India, south of Palakkad Gap. Description and habitat It is a medium-sized damselfly with black-capped blue eyes. Its thorax is velvet-black on dorsum and azure blue on sides. The dorsum is marked with narrow ante-humeral blue stripes. There is another moderately broad black stripe over the postero-lateral suture. The base of the sides is pale blue. Wings are transparent with black pterostigma. Abdomen is black, marked with azure blue on segment 1 and 2. Segments 3 to 7 have very narrow baso-dorsal annules. Segments 8 to 10 are blue. The apical border of 10 and the ventral borders of all segments are broadly black. Anal appendages are black. Female is similar to the male; but more robustly build. It can be distinguished from '' Esme mudiensis'' from its labrum marked with blue. From '' Esme longistyla'', it can be distinguished by its black legs unmarked with blue, by its stout i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederic Charles Fraser
''For others uses see Frederick Fraser (other)'' Frederic Charles Fraser (15 February 1880, in Woolwich – 2 March 1963, in Linwood was an English entomologist who specialised in Odonata. Following army service in India as a surgeon with the rank of lieutenant colonel, Fraser devoted himself entirely to dragonflies, mostly in the British Museum (Natural History), where his collection is maintained. Fraser's correspondence with A. Eric Gardner is in the library of the Natural History Museum, London. Fraser's correspondence with the Irish odonatologist Niall McNeill Niall MacNeill (1899–1969) was an Irish army officer and entomologist who specialised in Odonata and Heteroptera. He was the son of Eoin MacNeill, founder of the Irish Volunteers, which Niall MacNeill joined later becoming an officer in the Ir ... is in the Oxford University Museum. He was a fellow of the Royal Entomological Society. Selected works * 1933 '' The Fauna of British India, Includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platycnemididae
The Platycnemididae are a family of damselflies. They are known commonly as white-legged damselflies. There are over 400 species native to the Old World.Dijkstra, K. D. B., Kalkman, V. J., Dow, R. A., Stokvis, F. R., & Van Tol, J. (2014)Redefining the damselfly families: a comprehensive molecular phylogeny of Zygoptera (Odonata).''Systematic Entomology'', 39(1), 68-96. The family is divided into several subfamilies. Genera There are about 50 genera of Platycnemididae.Theischinger, G., Gassmann, D., & Richards, S. J. (2015)''Macrocnemis gracilis'', a new genus and species of Idiocnemidinae (Zygoptera: Platycnemididae) from Papua New Guinea.''Zootaxa'', 3990(3), 429. Genera include: * '' Allocnemis'' Selys, 1863 * '' Arabicnemis'' Waterston, 1984 * '' Arabineura'' Schneider & Dumont, 1995 * '' Archboldargia'' Lieftinck, 1949 * '' Arrhenocnemis'' Lieftinck, 1933 * '' Asthenocnemis'' Lieftinck, 1949 * '' Caconeura'' Kirby, 1890 * '' Calicnemia'' Strand, 1928 * '' Ciliagrion'' Sj� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palakkad Gap
Palakkad Gap or Palghat Gap is a low mountain pass in the Western Ghats between Coimbatore in Tamil Nadu and Palakkad in Kerala. It has an average elevation of with a width of . The pass is located between the Nilgiri Hills to the north and Anaimalai Hills to the south. Origin and History There are various theories about the origin of Palakkad gap. One among them is that it is caused by the landslide due to rivers flowing in opposite directions. The Bharathappuzha river (River Ponnani) originates in the Palakkad Gap from rivulets and tributaries feeding from steep escarpment slopes along the flanks of the Ghats. Another theory suggests that the gap may be created by an asteroid strike around 800 million to 550 million years ago. Palakkad gap has played a major role in enabling human migration into Kerala from parts of Tamil Nadu. From 300 B.C. to 13th century, it also helped the Cheras rule the entire Kerala and the Kongu Nadu as one geographical unit from Karur in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterostigma
The pterostigma (plural: pterostigmata) is a group of specialized cells in the outer wings of insects, which are often thickened or coloured, and thus stand out from other cells. It is particularly noticeable in dragonflies, but present also in other insect groups, such as snakeflies, hymenopterans, and megalopterans. Purpose The pterostigma, a heavier section of the wing than nearby sections, assists in gliding. Without the pterostigmata, self-exciting vibrations known as flutter would set in on the wing above a certain critical speed, making gliding impossible. Tests show that with the pterostigmata, the critical gliding speed is increased 10–25% on one species of dragonfly. Pseudopterostigma Some female damselflies in the family Calopterygidae The Calopterygidae are a family of damselflies, in the suborder Zygoptera. They are commonly known as the broad-winged damselflies, demoiselles, or jewelwings. These rather large damselflies have wingspans of 50–80 mm (c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esme Mudiensis
''Esme mudiensis'' is a damselfly in the family Platycnemididae. It is commonly known as the Travancore bambootail. It is endemic to the Western Ghats in India, particularly south of Palakkad Gap. Description and habitat It is a medium-sized damselfly with black-capped blue eyes. Its thorax is velvet-black on the dorsum and azure blue on the sides. The dorsum is marked with narrow ante-humeral blue stripes, and there is another moderately broad black stripe over the postero-lateral suture. The base of the sides is pale blue. Wings are transparent with black and diamond shaped pterostigma. The abdomen is black, marked with azure blue on segment 1 and 2. Segments 3 to 6 have very narrow baso-dorsal annules. Segments 8 to 10 are blue. There is a narrow black basal annule on segment 8. The ventral borders of all segments are broadly black. Anal appendages are black. The female is similar to the male, but with a more robust build. It can be easily distinguished from other species of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esme Longistyla
''Esme longistyla'' is damselfly in the family Platycnemididae. It is commonly known as the Nilgiri bambootail. It is endemic to Western Ghats in India. Description It is medium-sized damselfly with about abdomen and hindwings about with black-capped blue eyes. Its thorax is velvet-black on dorsum and azure blue on sides. The dorsum is marked with narrow ante-humeral blue stripes. There is another moderately broad black stripe over the postero-lateral suture. The base of the sides are pale blue. The under side of the thorax is greenish yellow or blue. The legs of the males are black. The abdomen is long and slender. The first and 8–10 segments on the abdomen are azure blue. The second segment of the damselfly is black with board irregular azure blue stripes on sides of abdomen. The segments from 3–7 are black with azure blue rings at the end of each segment. The segments 8 to 10 are azure blue; but the sides of segment 10 and apical border are narrowly black. Anal appendag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caconeura Gomphoides
''Caconeura gomphoides'' is a damselfly species in the family Platycnemididae. It is endemic to high altitude peat bogs and grassy uplands in Nilgiris. Description and habitat It is a medium-sized damselfly with black-capped blue eyes. Its thorax is black on dorsum and azure blue on the sides. There is a very narrow azure blue antehumeral stripe and a moderately broad black stripe on the postero-lateral suture on each side. Wings are transparent with reddish-brown pterostigma, framed in thick black nervures. Abdomen is black with azure blue stripes on segment 1 and 2. Segment 3 to 6 have narrow basal rings in azure blue. Segments 8 to 10 are entirely azure blue. Female is similar to the male. It can be distinguished from all other species of this genus by the reddish-brown color of the pterostigma and by the mid-dorsal mark on segment 2. It is also comparatively short and thick than other similar species. It breeds in small streams in Nilgiris. Commonly found in grassy upland, cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Odonates Of India
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing (di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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