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Echo (damselfly)
''Echo'' is a genus of damselflies belonging to the family Calopterygidae. There are five species.Zhang, H. M., Hämäläinen, M., & Cai, Q. H. (2015)Description of ''Echo candens'' sp. nov. from western Yunnan, China (Odonata: Calopterygidae).''Odonatologica'' 44(1-2), 107-116. A sixth, ''Echo maxima'', is sometimes included, but it probably belongs to a different genus.Yu, X. and Hämäläinen, M. (2012)A description of ''Echo perornata'' spec. nov. from Xizang (Tibet), China (Odonata: Calopterygidae). ''Zootaxa'' 3218 40-46. This genus is distributed in Asia, especially Southeast Asia. Species include: *''Echo candens'' Zhang, Hämäläinen, & Cai, 2015 *''Echo margarita'' Selys, 1853 *''Echo modesta'' Laidlaw, 1902 *''Echo perornata'' Yu & Hämäläinen, 2012 *''Echo uniformis In audio signal processing and acoustics, an echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is directly proportional to the distance of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmond De Sélys Longchamps
Baron Michel Edmond de Selys Longchamps (25 May 1813 – 11 December 1900) was a Belgian Liberal Party politician and scientist. Selys Longchamps has been regarded as the founding figure of odonatology, the study of the dragonflies and damselflies. His wealth and influence enabled him to amass one of the finest collections of neuropteroid insects and to describe many species from around the world. His collection is housed in the Royal Belgian Institute of Natural Sciences. Biography Selys was a wealthy aristocrat born in Paris to Michel Laurent de Selys Longchamps and Marie-Denise Gandolphe. He was educated at home by private tutors and never attended school or university. Nevertheless, he became known as the world's leading authority on Odonata as well as an expert on Neuroptera and European Orthoptera. He was also a leading ornithologist. A Liberal Party representative in the Belgian Parliament, he became Councillor for Waremme in 1846, entered the Belgian Senate in 1855, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), 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 taxonomy (biology), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damselfly
Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies, which constitute the other odonatan suborder, Anisoptera, but are smaller and have slimmer bodies. Most species fold the wings along the body when at rest, unlike dragonflies which hold the wings flat and away from the body. An ancient group, damselflies have existed since at least the Lower Permian, and are found on every continent except Antarctica. All damselflies are predatory insects; both nymphs and adults actively hunt and eat other insects. The nymphs are aquatic, with different species living in a variety of freshwater habitats including acidic bogs, ponds, lakes and rivers. The nymphs moult repeatedly, at the last moult climbing out of the water to undergo metamorphosis. The skin splits down the back, they emerge and inflate their wings and abdomen to gain their adult form. Their presence on a body of water indicates that it is relatively unpolluted, but the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (compared to about 44 mm in the common bluetail damselfly, '' Ischnura elegans''), are often metallic-coloured, and can be differentiated from other damselflies by the broader connection between the wings and the body, as opposed to the abrupt narrowing seen in other damselfly families. The family contains some 150 species. The Calopterygidae are found on every continent except Antarctica. They live along rivers and streams.Córdoba-Aguilar, A. & Cordero-Rivera, A. (2005)Evolution and ecology of Calopterygidae (Zygoptera: Odonata): status of knowledge and research perspectives.''Neotrop. Entomol'' 34(6), 861-879. Etymology The name is derived from Greek ''kalos'' meaning beautiful and ''ptery'' meaning winged. Characteristics The adults have metallic bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Candens
''Echo candens'' is a species of broad-winged damselfly in the family Calopterygidae. References Further reading * Calopterygidae Articles created by Qbugbot Insects described in 2015 {{Calopterygoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Margarita
''Echo margarita'' is a species of broad-winged damselfly in the family Calopterygidae. The IUCN conservation status of ''Echo margarita'' is "LC", least concern, with no immediate threat to the species' survival. The IUCN status was reviewed in 2010. Subspecies These two subspecies belong to the species ''Echo margarita'': * ''Echo margarita margarita'' * ''Echo margarita tripartita'' Selys, 1879 References Further reading * Calopterygidae Articles created by Qbugbot Insects described in 1853 {{Calopterygoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Modesta
''Echo modesta'' is a species of broad-winged damselfly in the family Calopterygidae. The IUCN conservation status of ''Echo modesta'' is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2011. References Further reading * Calopterygidae Articles created by Qbugbot Insects described in 1902 {{Calopterygoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Perornata
''Echo perornata'' is a species of broad-winged damselfly in the family Calopterygidae. References Further reading * Calopterygidae Articles created by Qbugbot Insects described in 2012 {{Calopterygoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Uniformis
In audio signal processing and acoustics, an echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is directly proportional to the distance of the reflecting surface from the source and the listener. Typical examples are the echo produced by the bottom of a well, by a building, or by the walls of an enclosed room and an empty room. A true echo is a single reflection of the sound source. The word ''echo'' derives from the Greek ἠχώ (''ēchō''), itself from ἦχος (''ēchos''), "sound". Echo in the Greek folk story is a mountain nymph whose ability to speak was cursed, leaving her able only to repeat the last words spoken to her. Some animals use echo for location sensing and navigation, such as cetaceans (dolphins and whales) and bats in a process known as echolocation. Echoes are also the basis of Sonar technology. Acoustic phenomenon Acoustic waves are reflected by walls or other hard surfaces, such as mountains an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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