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Aljassa Annulipes
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aljassa Annulipes
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...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] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anyphaenidae
Anyphaenidae is a Family (biology), family of Araneomorphae, araneomorph spiders, sometimes called anyphaenid sac spiders. They are distinguished from the sac spiders of the family Clubionidae and other spiders by having the abdominal spiracle placed one third to one half of the way anterior to the spinneret (spider), spinnerets toward the epigastric furrow on the underside of the abdomen. In most spiders the spiracle is just anterior to the spinnerets. Like Sac spider, clubionids, anyphaenids have eight eyes arranged in two rows, conical anterior spinnerets and are wandering predators that build Spider silk, silken retreats, or sacs, usually on plant terminals, between leaves, under bark or under rocks. There are more than 500 species in over 50 genera worldwide. The family is widespread and includes such common genera as ''Anyphaena'' (worldwide except tropical Africa and Asia) and ''Hibana'' (New World). Only one species (''Anyphaena accentuata, A. accentuata'') occurs in nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antônio Brescovit
Antônio Domingos Brescovit (born 1959) is a Brazilian arachnologist. His first name, Antônio (the spelling used in Brazil) may also be spelt António (the spelling used in Portugal). He develops academic activities at the 'arthropodae laboratorium' at the Butantan Institute,''Ciência hoje: revista de divulgação científica da Sociedade Brasileira para o Progresso da Ciência''. Volumen 40, Nº 235–240. Editor A Sociedade, 2007 and he is a specialist in Neotropical Arachnida. Selected publications * . 2004. ''A new species of Drymusa Simon, 1891 (Araneae, Drymusidae) from Brazil''. Editor Magnolia Press, 5 pp. * . 1997. ''Revisión del género Macerio y comentarios sobre la ubicación de Cheiracanthium, Tecution y Helebonia (Araeae, Miturgidae, Eutichurinae)''. Iheringia, ser. Zool. Porto Alegre (82): 43–66 * . 1995. ''On Unicorn, a new genus of the spider family Oonopidae (Araneae, Dysderoidea)''. Nº 3152 de American Museum Novitates. Editor American Museum of Natural H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aljassa Notata
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aljassa Poicila
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aljassa Subpallida
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aljassa Venezuelica
''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – Peru *''Aljassa poicila'' (Chamberlin, 1916) – Peru *''Aljassa subpallida'' (L. Koch, 1866) – Colombia *''Aljassa venezuelica ''Aljassa'' is a genus of South American anyphaenid sac spiders first described by Antônio Brescovit in 1997. Species it contains five species: *''Aljassa annulipes'' (Caporiacco, 1955) – Venezuela *''Aljassa notata'' (Keyserling, 1881) – ...'' (Caporiacco, 1955) – Venezuela References Anyphaenidae Araneomorphae genera Spiders of South America Taxa named by Antônio Brescovit {{Anyphaenidae-stub ... [...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 South America
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] |
