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Eutrombicula Wuyiensis
''Eutrombicula'' is a genus of mites in the family Trombiculidae. The species of this genus are found throughout North America, and Australia. The genus was first described by Henry Ellsworth Ewing in 1938. Two genera of chigger mites, each containing many species, are of concern to U.S. deployed military forces. They are ''Eutrombicula'' and ''Leptotrombidium''. Chiggers in the genus ''Eutrombicula'', such as ''Eutrombicula alfreddugesi'', do not transmit any known pathogens to people, but they can cause irritating bites, dermatitis and severe itching when they feed on the unsuspecting host. They are widely distributed in the Western Hemisphere, and Europe. By comparison chiggers in the genus ''Leptotrombidium'' are the vectors of scrub typhus throughout Asia and portions of Australia. The bite of ''Leptotrombidium'' often does not itch, or at least not as intensely, as those of ''Eutrombicula''. Also, a black necrotic lesion known as an eschar develops where the chigger fed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Ellsworth Ewing
Henry Ellsworth Ewing (11 February 1883 – 5 January 1951) was an American Arachnology, arachnologist. He worked at several universities, but spent most of his career at the Bureau of Entomology and Plant Quarantine. Ewing was considered an authority on Arachnida, arachnids, particularly Acari, mites. Early life and education Henry Ellsworth Ewing was born on 11 February 1883 in Arcola, Illinois. He attended Knox College (Illinois), Knox College and obtained a bachelor's degree at the University of Illinois at Urbana–Champaign, University of Illinois in 1906. In 1908, he received a master's degree from the University of Illinois. In 1906 and 1907, he was a student at the University of Chicago. In 1910 and 1911, he was a Schuyler fellow at Cornell University, which is where he earned his PhD in 1911. Career From 1908 to 1909, Ewing taught high school. Ewing's first job in the biological sciences was as an Assistant Entomology, Entomologist at Oregon State University. He held this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutrombicula Alfreddugesi
''Eutrombicula alfreddugesi'' is a species in the genus ''Eutrombicula''. It is the common chigger species of the United States, also sometimes called the harvest mite. Chiggers are the parasitic larval stages of these free-living mites. They are rarely seen in the dry Western states because the species prefers humid climates. '''' online, retrieved 10 August 2011: "occurs from the Atlantic coast to the Midwest and southward to Mexico". They are commonly found in undergrowth and grassy brush areas; the larvae host on animals (e.g. reptiles, birds, and wild and domestic mammals), causing [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Described In 1838
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arachnids Of Europe
Arachnids are arthropods in the class Arachnida () of the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vinegaroons. Adult arachnids have eight legs attached to the cephalothorax. In some species the frontmost pair of legs has converted to a sensory function, while in others, different appendages can grow large enough to take on the appearance of extra pairs of legs. Almost all extant arachnids are terrestrial, living mainly on land. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 110,000 named species, of which 51,000 are species of spiders. The term is derived from the Greek word (''aráchnē'', 'spider'), from the myth of the hubristic human weaver Arachne, who was turned into a spider. Morphology Almost all adult arachnids have eight legs, unlike adult insects which all ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annales Zoologici
''Annales Zoologici'' is a quarterly peer-reviewed scientific journal covering all aspects of systematic zoology. Established in 1951, it is published by the Museum and Institute of Zoology of the Polish Academy of Sciences The Polish Academy of Sciences (, PAN) is a Polish state-sponsored institution of higher learning. Headquartered in Warsaw, it is responsible for spearheading the development of science across the country by a society of distinguished scholars a .... External links * Zoology journals Polish Academy of Sciences academic journals English-language journals Systematics journals Quarterly journals Academic journals established in 1951 Academic journals published by museums {{zoo-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutrombicula Yunkeri
''Eutrombicula'' is a genus of mites in the family Trombiculidae. The species of this genus are found throughout North America, and Australia. The genus was first described by Henry Ellsworth Ewing in 1938. Two genera of chigger mites, each containing many species, are of concern to U.S. deployed military forces. They are ''Eutrombicula'' and ''Leptotrombidium''. Chiggers in the genus ''Eutrombicula'', such as ''Eutrombicula alfreddugesi'', do not transmit any known pathogens to people, but they can cause irritating bites, dermatitis and severe itching when they feed on the unsuspecting host. They are widely distributed in the Western Hemisphere, and Europe. By comparison chiggers in the genus ''Leptotrombidium'' are the vectors of scrub typhus throughout Asia and portions of Australia. The bite of ''Leptotrombidium'' often does not itch, or at least not as intensely, as those of ''Eutrombicula''. Also, a black necrotic lesion known as an eschar develops where the chigger fed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
