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Tetracanthagyna
''Tetracanthagyna'' is a genus of dragonflies in the family Aeshnidae. '' T. plagiata'' is the world's largest dragonfly by wingspan and the female ''T. plagiata'' is probably the heaviest living odonate. The genus contains the following species: *'' Tetracanthagyna bakeri'' *'' Tetracanthagyna brunnea'' *'' Tetracanthagyna degorsi'' *''Tetracanthagyna plagiata The giant hawker (''Tetracanthagyna plagiata'') or the gigantic riverhawker, is a species of dragonfly in the family Aeshnidae. It is found throughout Sundaland, having been recorded on Thailand, Peninsular Malaysia, Singapore, Sumatra, and Born ...'' – giant hawker *'' Tetracanthagyna waterhousei'' – giant river hawker References Aeshnidae Anisoptera genera Taxa named by Edmond de Sélys Longchamps {{Aeshnidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetracanthagyna Plagiata
The giant hawker (''Tetracanthagyna plagiata'') or the gigantic riverhawker, is a species of dragonfly in the family Aeshnidae. It is found throughout Sundaland, having been recorded on Thailand, Peninsular Malaysia, Singapore, Sumatra, and Borneo. It is the type species for the genus '' Tetracanthagyna''. It is the heaviest of all living Odonata, and additionally are the second largest of all living Odonates by wingspan, second only to '' Megaloprepus caerulatus'' (Pseudostigmatidae). ''T. plagiata'' is additionally the largest living dragonfly, with a maximum wingspan of 163 millimeters, exceeding the wingspan of runner-up ''Petalura ingentissima'' at 162 millimeters. Taxonomy ''Tetracanthagyna plagiata'' was initially described by Charles Owen Waterhouse in 1877 under the name ''Gynacantha plagiata'', classifying it under the now-separate dragonfly genus ''Gynacantha'', the type locality was listed as Borneo. Robert McLachlan commented that his peer Edmond de Sélys Longcha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetracanthagyna Waterhousei
''Tetracanthagyna'' is a genus of dragonflies in the family Aeshnidae The Aeshnidae, also called aeshnids, hawkers, or darners, is a family of dragonflies. The family includes the largest dragonflies found in North America and Europe Europe is a large peninsula conventionally considered a continent in its o .... '' T. plagiata'' is the world's largest dragonfly by wingspan and the female ''T. plagiata'' is probably the heaviest living odonate. The genus contains the following species: *'' Tetracanthagyna bakeri'' *'' Tetracanthagyna brunnea'' *'' Tetracanthagyna degorsi'' *'' Tetracanthagyna plagiata'' – giant hawker *'' Tetracanthagyna waterhousei'' – giant river hawker References Aeshnidae Anisoptera genera Taxa named by Edmond de Sélys Longchamps {{Aeshnidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetracanthagyna Degorsi
''Tetracanthagyna'' is a genus of dragonflies in the family Aeshnidae. '' T. plagiata'' is the world's largest dragonfly by wingspan and the female ''T. plagiata'' is probably the heaviest living odonate. The genus contains the following species: *'' Tetracanthagyna bakeri'' *'' Tetracanthagyna brunnea'' *'' Tetracanthagyna degorsi'' *'' Tetracanthagyna plagiata'' – giant hawker *''Tetracanthagyna waterhousei ''Tetracanthagyna'' is a genus of dragonflies in the family Aeshnidae The Aeshnidae, also called aeshnids, hawkers, or darners, is a family of dragonflies. The family includes the largest dragonflies found in North America and Europe ...'' – giant river hawker References Aeshnidae Anisoptera genera Taxa named by Edmond de Sélys Longchamps {{Aeshnidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odonate
Odonata is an order of flying insects that includes the dragonflies and damselflies. Members of the group first appeared during the Triassic, though members of their total group, Odonatoptera, first appeared in Late Carboniferous. The two common groups are distinguished with dragonflies, placed in the suborder Epiprocta, usually being larger, with eyes together and wings up or out at rest, while damselflies, suborder Zygoptera, are usually smaller with eyes placed apart and wings along body at rest. All Odonata have aquatic larvae called naiads (nymphs), and all of them, larvae and adults, are carnivorous. The adults can land, but rarely walk. Their legs are specialised for catching prey. They are almost entirely insectivorous. Etymology and terminology Fabricius coined the term ''Odonata'' in 1793 from the Ancient Greek ( Ionic form of ) 'tooth'. One hypothesis is that it was because their maxillae are notably toothed. Most insects also have toothed mandibles. The word ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odonata
Odonata is an order of flying insects that includes the dragonflies and damselflies. Members of the group first appeared during the Triassic, though members of their total group, Odonatoptera, first appeared in Late Carboniferous. The two common groups are distinguished with dragonflies, placed in the suborder Epiprocta, usually being larger, with eyes together and wings up or out at rest, while damselflies, suborder Zygoptera, are usually smaller with eyes placed apart and wings along body at rest. All Odonata have aquatic larvae called naiads (nymphs), and all of them, larvae and adults, are carnivorous. The adults can land, but rarely walk. Their legs are specialised for catching prey. They are almost entirely insectivorous. Etymology and terminology Fabricius coined the term ''Odonata'' in 1793 from the Ancient Greek ( Ionic form of ) 'tooth'. One hypothesis is that it was because their maxillae are notably toothed. Most insects also have toothed mandibles. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeshnidae
The Aeshnidae, also called aeshnids, hawkers, or darners, is a family of dragonflies. The family includes the largest dragonflies found in North America and Europe and among the largest dragonflies on the planet. Description Common worldwide or nearly worldwide genera are '' Aeshna'' and '' Anax''. The African ''Anax tristis'' has a wingspan over 125 mm, making it one of the world's largest known dragonflies. There are 41 North American species in 11 genera in this family. Most European species belong to ''Aeshna''. Their American name "darner" stems from the female abdomens looking like a sewing needle, as they cut into plant stem when they lay their eggs through the ovipositor. The dragonflies mate in flight. The eggs are deposited in water or close by. The larvae (nymphs or naiads) are generally slender compared to those of other families, with a long and flat extensible lower lip (labium). The larvae are aquatic predators, feeding on other insects and even small fish. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National University Of Singapore
The National University of Singapore (NUS) is a national public research university in Singapore. Founded in 1905 as the Straits Settlements and Federated Malay States Government Medical School, NUS is the oldest autonomous university in the country. It offers degree programmes in a wide range of disciplines at both the undergraduate and postgraduate levels, including in the sciences, medicine and dentistry, design and environment, law, arts and social sciences, engineering, business, computing, and music. NUS is one of the most highly-ranked academic institutions in the world. It has consistently featured in the top 30 of the Quacquarelli Symonds (QS) World University Rankings and the Times Higher Education (THE) World University Rankings, and in the top 100 of the Academic Ranking of World Universities (ARWU). As of 2022-2023, NUS is 11th worldwide according to QS and 19th worldwide according to THE. NUS's main campus is located in the southwestern part of Singapore, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...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] |
Dragonfly
A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of true dragonfly are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterized by a pair of large, multifaceted compound eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Many dragonflies have brilliant iridescent or metallic colours produced by structural colouration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each. Dragonflies can be mistaken for the closely related damselflies, which make up the other odonatan infraorder ( Zygoptera) and are similar in body plan though usually lighter in build; however, the wings of most dragonflies are held flat and away from the body, while damselflies hold their wings folded at rest, along or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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