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Enallagma Annexum
''Enallagma annexum'', the northern bluet, is a species of damselfly in the family Coenagrionidae. ''Enallagma annexum'' was formerly included with ''Enallagma cyathigerum''. Identification The northern bluet is a small damselfly with a length of 1 to 1.6 inches (26 to 40 mm) long. The male is predominantly blue on the sides of its thorax, and the upper side of its abdomen. Its lower abdominal appendages are longer than its upper appendages. The female's body is greenish-yellow to brown color. The upper side of its abdomen is mostly black.Lam, E. (2004) ''Damselflies of the Northeast''. Forest Hills, NY:Biodiversity Books. p. 77. Flight season Northern bluets have a flight season of early May to July.DuBois, B. (2003) Damselfles of the North Woods. Duluth, MN:Kollath+Stensaas Similar species Many species in the genus ''Enallagma'' look similar to each other. The northern bluet looks similar to many bluet species. They include the boreal bluet The boreal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann August Hagen
Hermann August Hagen (30 May 1817 – 9 November 1893) was a German entomologist who specialised in Neuroptera and Odonata. He had established himself as one of Europe's preeminent entomologists by 1867 when he accepted a position at Harvard University to curate the Museum of Comparative Zoology. In 1870 he became the first entomologist in the United States to hold the formal title, Professor of Entomology. Biography Hagen was born 30 May 1817 in Königsberg, Prussia. He was the son of Anna (Linck) Hagen and Carl Heinrich Hagen. His father was a senior government counselor and a professor of political science at the University of Königsberg and his grandfather, Karl Gottfried Hagen, was a professor of chemistry at the same university.Henshaw (1894) Young Hagen graduated from a gymnasium in 1836 and began to study medicine at the University of Königsberg. His course of studies was greatly influenced by his zoology professor, Martin Heinrich Rathke and together they toured maj ... [...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] |
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 opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coenagrionidae
The insect family Coenagrionidae is placed in the order Odonata and the suborder Zygoptera. The Zygoptera are the damselflies, which although less known than the dragonflies, are no less common. More than 1,300 species are in this family, making it the largest damselfly family. The family Coenagrionidae has six subfamilies: Agriocnemidinae, Argiinae, Coenagrioninae, Ischnurinae, Leptobasinae, and Pseudagrioninae. This family is referred to as the narrow-winged damselflies or the pond damselflies. The Coenagrionidae enjoy a worldwide distribution, and are among the most common of damselfly families. This family has the smallest of damselfly species. More than 110 genera of the family Coenagrionidae are currently accepted.Integrated Taxonomic Information System (2007)Coenagrionidae retrieved November 4, 2007. Etymology The name may be derived from Greek ''coen'' meaning shared or common and ''agrio'' meaning fields or wild. Characteristics * Usually have a black pattern * Ground c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Cyathigerum
''Enallagma cyathigerum'' (common blue damselfly, common bluet, or northern bluet) is a species found mainly between latitudes 40°N and 72°N; It is widely distributed in the Palearctic, and the Nearctic species ''Enallagma annexum'' was at one time considered to be synonymous with it. The species can reach a length of 32 to 35 mm (1.3 to 1.4 in). It is common in many different countries including Russia, Sweden, Norway, Finland, the United States of America, and South Korea. Damselflies are an important link between the health of the aquatic ecosystem and its response to climate change. Habitat These damselflies inhabit freshwater bodies whose conditions range, they have been seen in acidic fens as well as eutrophic ponds. They have been considered one of the more sensitive insects in an aquatic setting. They are important within the trophic levels as they are an intermediate predator. They consume smaller larvae and they are preyed on by fish and larvae bigger th ... [...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] |
Enallagma
''Enallagma'' is a genus of damselflies in the family Coenagrionidae commonly known as bluets. Adults range in length from 28 mm to 40 mm. Males are usually bright blue and black while the coloration of females varies by species. Bluets can be distinguished from the similar vivid dancer by wing position; at rest, bluets' wings hang down on either side of their body, while vivid dancers hold their wings above their body. Bluets also have shorter leg spines. Subspecies The genus consists of the following species: *'' Enallagma ambiguum'' *'' Enallagma anna'' – River Bluet *'' Enallagma annexum'' – Northern Bluet *'' Enallagma antennatum'' – Rainbow Bluet *''Enallagma aspersum'' – Azure Bluet *'' Enallagma basidens'' – Double-Striped Bluet *'' Enallagma boreale'' – Boreal Bluet *'' Enallagma cardenium'' – Purple Bluet *'' Enallagma carunculatum'' – Tule Bluet *'' Enallagma civile'' – Familiar Bluet *'' Enallagma clausum'' – Alkali Bluet *'' Enalla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Boreale
The boreal bluet (''Enallagma boreale'') is a species of damselfly in the family Coenagrionidae. Description Adult The boreal bluet is a small damselfly with a length of 1 to 1.6 inches (26 to 40 mm) long. The male is predominately blue on the sides of its thorax, and the upper side of its abdomen. Its lower abdominal appendages are longer than its upper appendages. The female's body is greenish-yellow to brown color. The upper side of its abdomen is mostly black. Nymph The nymph of the boreal bluet is small in size with a length of 0.75 to 1 inch (19 to 23 mm). It has the typical slender shape of many immature damselflies. Nymphs range in color from light to dark brown. Distribution *United States: (Alaska • Arizona • California • Colorado • Connecticut • Idaho • Iowa • Indiana • Massachusetts • Maine • Michigan • Missouri • Montana • New Hampshire • New Jersey • New Mexico • Ohio • Pennsylvania • Rhode Island †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Civile
The familiar bluet (''Enallagma civile'') is a damselfly of the family Coenagrionidae, native to much of the United States and southern Canada. References * * Lam, E. (2004) ''Damselflies of the Northeast''. Forest Hills, NY:Biodiversity Books. p. 72. External linksFamiliar bluet Diagnostic reference photographs and information * Coenagrionidae Odonata of North America Insects of Canada Insects of the United States Fauna of the Eastern United States Fauna of the Western United States Insects described in 1861 Taxa named by Hermann August Hagen {{Coenagrionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Hageni
''Enallagma hageni'', or Hagen's bluet, is a species of narrow-winged damselfly in the family Coenagrionidae. It is found in North America. The IUCN conservation status The conservation status of a group of organisms (for instance, a species) indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation ... of ''Enallagma hageni'' is "LC", least concern, with no immediate threat to the species' survival. The population is stable. References Further reading * Coenagrionidae Articles created by Qbugbot Insects described in 1863 {{Coenagrionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Ebrium
The marsh bluet (''Enallagma ebrium'') is a damselfly species in the family (biology), family Coenagrionidae. Description *Adult – Male marsh bluets have a blue thorax with a broad black stripe above and has two black shoulder stripes. Its slender abdomen is mostly blue with black marks along the top and with a black tip. The large eyes are dark blue-black with small, tear-shaped postocular spots. The thorax of the female is similar to the male only its tan or blue-green and black instead of blue and black. Its abdomen is mostly black above and tan or blue-green below. Its large eyes are brown and yellowish. *Naiad – The naiad is small about in length. It has the typical slender shape of an immature damselfly. The naiad is light to dark brown in color. Habitat Marsh bluets are usually found near lowland lakes, ponds, and marshes, and has a definite preference for alkaline waters. Diet *Naiad – They eat a wide variety of aquatic insects, including mosquito larvae, mayfly la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enallagma Vernale
''Enallagma vernale'', the vernal bluet, is a species of narrow-winged damselfly in the family Coenagrionidae. It is found in North America. The IUCN conservation status of ''Enallagma vernale'' is "LC", least concern, with no immediate threat to the species' survival. The population is stable. References Further reading * * Coenagrionidae Insects described in 1943 {{Coenagrionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
