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Nuctenea
''Nuctenea'' is a genus of orb-weaver spiders first described by Eugène Simon in 1895. Its most familiar member is the Walnut Orb-Weaver Spider, ''N. umbratica''. Species it contains only three species. * '' Nuctenea cedrorum'' (Simon, 1929) — Algeria * '' Nuctenea silvicultrix'' (C. L. Koch, 1835) — Palearctic * ''Nuctenea umbratica ''Nuctenea umbratica'', the walnut orb-weaver spider, is a species of spider in the family Araneidae. Name The species name ''umbratica'' means "living in the shadows" in Latin. Description The walnut orb-weaver spider is very wide and flatte ...'' (Clerck, 1757) — Europe to Azerbaijan :* ''Nuctenea umbratica nigricans'' (Franganillo, 1909) — Portugal :* ''Nuctenea umbratica obscura'' (Franganillo, 1909) — Portugal References Araneidae Araneomorphae genera Spiders of Asia Spiders of Africa Taxa named by Eugène Simon {{Araneidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuctenea Cedrorum
''Nuctenea'' is a genus of orb-weaver spiders first described by Eugène Simon in 1895. Its most familiar member is the Walnut Orb-Weaver Spider, ''N. umbratica''. Species it contains only three species. * '' Nuctenea cedrorum'' (Simon, 1929) — Algeria * '' Nuctenea silvicultrix'' (C. L. Koch, 1835) — Palearctic * ''Nuctenea umbratica ''Nuctenea umbratica'', the walnut orb-weaver spider, is a species of spider in the family Araneidae. Name The species name ''umbratica'' means "living in the shadows" in Latin. Description The walnut orb-weaver spider is very wide and flatte ...'' (Clerck, 1757) — Europe to Azerbaijan :* ''Nuctenea umbratica nigricans'' (Franganillo, 1909) — Portugal :* ''Nuctenea umbratica obscura'' (Franganillo, 1909) — Portugal References Araneidae Araneomorphae genera Spiders of Asia Spiders of Africa Taxa named by Eugène Simon {{Araneidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuctenea Silvicultrix
''Nuctenea'' is a genus of orb-weaver spiders first described by Eugène Simon in 1895. Its most familiar member is the Walnut Orb-Weaver Spider, ''N. umbratica''. Species it contains only three species. * ''Nuctenea cedrorum'' (Simon, 1929) — Algeria * '' Nuctenea silvicultrix'' (C. L. Koch, 1835) — Palearctic * ''Nuctenea umbratica ''Nuctenea umbratica'', the walnut orb-weaver spider, is a species of spider in the family Araneidae. Name The species name ''umbratica'' means "living in the shadows" in Latin. Description The walnut orb-weaver spider is very wide and flatte ...'' (Clerck, 1757) — Europe to Azerbaijan :* ''Nuctenea umbratica nigricans'' (Franganillo, 1909) — Portugal :* ''Nuctenea umbratica obscura'' (Franganillo, 1909) — Portugal References Araneidae Araneomorphae genera Spiders of Asia Spiders of Africa Taxa named by Eugène Simon {{Araneidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuctenea Umbratica
''Nuctenea umbratica'', the walnut orb-weaver spider, is a species of spider in the family Araneidae. Name The species name ''umbratica'' means "living in the shadows" in Latin. Description The walnut orb-weaver spider is very wide and flattened, with a leathery skin. Its color ranges from red brown and grey brown to black with a dark, yellowish to yellow-greenish leaf-like fleckled marking on its opisthosoma The opisthosoma is the posterior part of the body in some arthropods, behind the prosoma (cephalothorax). It is a distinctive feature of the subphylum Chelicerata (arachnids, horseshoe crabs and others). Although it is similar in most respects to a ..., where small dents are visible. These are the onsets of muscles that flatten the abdomen. Female ''N. umbratica'' can reach up to 15 mm in size, the males grow only up to 8 mm. The spider hides during the day outside of buildings in wall crevices, or under loose bark. They are very common in Central Europe; fema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneidae
Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields, and forests. The English word "orb" can mean "circular", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs. The family has a cosmopolitan distribution, including many well-known large or brightly colored garden spiders. With 3,108 species in 186 genera worldwide, the Araneidae comprise the third-largest family of spiders (behind the Salticidae and Linyphiidae). Araneid webs are constructed in a stereotypical fashion, where a framework of nonsticky silk is built up before the spider adds a final spiral of silk covered in sticky droplets. Orb webs are also produced by members of other spider families. The long-jawed orb weavers (Tetragnathidae) were formerly included in the Araneidae; they are closely related, being part of the superfamily Araneo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugène Simon
Eugène Louis Simon (; 30 April 1848 – 17 November 1924) was a French naturalist who worked particularly on insects and spiders, but also on birds and plants. He is by far the most prolific spider taxonomist in history, describing over 4,000 species. Work on spiders His most significant work was ''Histoire Naturelle des Araignées'' (1892–1903), an encyclopedic treatment of the spider genera of the world. It was published in two volumes of more than 1000 pages each, and the same number of drawings by Simon. Working at the Muséum National d'Histoire Naturelle in Paris, it took Simon 11 years to complete, while working at the same time on devising a taxonomic scheme that embraced the known taxa. Simon described a total of 4,650 species, and as of 2013 about 3,790 species are still considered valid. The International Society of Arachnology offers a Simon Award recognising lifetime achievement. The Eocene fossil spider species '' Cenotextricella simoni'' was named in his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Alexander Clerck
Carl Alexander Clerck (1709 – 22 July 1765) was a Sweden, Swedish entomologist and arachnology, arachnologist. Clerck came from a family in the petty Swedish nobility, nobility and entered the University of Uppsala in 1726. Little is known of his studies; although a contemporary of Carl Linnaeus, Linnaeus, it is unknown whether he had any contact with him during his time in Uppsala. His limited means forced him to leave university early and enter into government service, later ending up working in the administration of the City of Stockholm. His interest in natural history appears to have come at a more mature age, influenced by a lecture of Linnaeus he attended in Stockholm in 1739. In the following years he collected and categorized many spiders, published together with more general observations on the morphology and behaviour of spiders, in his ''Svenska Spindlar'' ("Swedish spiders", 1757, also known by its Latin subtitle, ''Aranei Suecici''). He also started the publication ... [...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] |
Araneomorphae Genera
The Araneomorphae (also called the Labidognatha) are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their close kin), where they point straight down. Araneomorphs comprise the vast majority of living spiders. Distinguishing characteristics Most spider species are Araneomorphae, which have fangs that face towards each other, increasing the orientations they can employ during prey capture. They have fewer book lungs (when present), and the females typically live one year. The Mygalomorphae have fangs that face towards the ground, and which are parallel to the long axis of the spider's body, thus they have only one orientation they can employ during prey capture. They have four pairs of book lungs, and the females often live many years. Image:Atrax robustus.jpg, This ''Atrax robustus'' shows the orientation of Myglamorphae fangs. Image:Che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of Asia
Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and rank seventh in total species diversity among all Order (biology), orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every land habitat. , 50,356 spider species in 132 Family (biology), families have been recorded by Taxonomy (biology), taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segmentation (biology), segments are fused into two Tagma (biology), tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindrical Gl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of Africa
Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every land habitat. , 50,356 spider species in 132 families have been recorded by taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindrical pedicel, however, as there is currently neither paleontological nor embryological evidence that spiders ever had a separate t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
