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Brazilian Wandering Spider
''Phoneutria'' is a genus of spiders in the family Ctenidae. Phoneutria venom is potentially medically significant to humans. They are mainly found in northern South America, with one species in Central America. Members of the genus are commonly referred to as Brazilian wandering spiders. Other English names include armed spiders (''armadeiras'' in Brazilian Portuguese) and banana spiders (a name shared with several others). Description The spiders in the genus can grow to have a leg span of . Their body length ranges from . While some other araneomorph spiders have a longer leg span, the largest ''Phoneutria'' species have the longest body and the greatest body weight in this group. The genus is distinguished from other related genera such as '' Ctenus'' by the presence of dense prolateral scopulae (a dense brush of fine hairs) on the pedipalp tibiae and tarsi in both sexes. ''Phoneutria'' are easily confused with several other non-medically significant ctenids, especially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneutria Nigriventer
''Phoneutria nigriventer'' is a species of Medically significant spider bites, medically significant spider in the family Ctenidae, found in the Southern Cone of South America (Brazil, Uruguay, Paraguay, and Argentina). Along with other members of the genus, they are often referred to as Brazilian wandering spiders. Its bite can cause severe symptoms, including extraordinary pain, increased pulse, blood pressure, and respiratory rate, penile erection (priapism) that lasts for several hours, and in Phoneutria#Reported_cases, several documented cases, death.Natural Viagra: Spider bite causes prolonged erection ''Live Science'', April 30, 2007. Accessed July 9, 2019. Description and behavior ''Phoneutria nigriventer'' is a large spider. Its maximum body ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelicerae
The chelicerae () are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or similarly to pincers. Some chelicerae, such as those found on nearly all spiders, are hollow and contain (or are connected to) venom glands, and are used to inject venom into prey or a perceived threat. In ''Pisaurina mira'', also known as the nursery web spider, the chelicerae are utilized to snatch the prey once it becomes within reach, facilitating the "sit-and-wait ambush predator" behavior. Both pseudoscorpions and harvestmen have structures on their chelicerae that are used for grooming (papillae in pseudoscorpions, cheliceral teeth in Opiliones). Types Chelicerae can be divided into three kinds: jackknife chelicerae, scissor chelicerae, and 3-segmented chelate chelicerae. Jackknife chelicerae The jackknife chelicera is subchelate (with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneutria Keyserlingi
''Phoneutria keyserlingi'' is a species of spiders in the family Ctenidae, found in Brazil. ''P. keyserlingi'' is venomous and should be treated with caution, studies on the other ''Phoneutria'' are scarce, however, a recent characterization of the venom of this species has shown that it contains neurotoxins similar to those isolated from ''Phoneutria nigriventer'' and that are active on the neuronal ion () channels and NMDA-type glutamate receptors. CRISP-1 is a protein (basically an allergen) from the cysteine-rich ''P. keyserlingi'' venom, proteins in the CAP domain that includes CRISP have also been recruited from '' cephalopods'', ''cone snails'', ''scorpions'', '' reptiles'' and ''ticks'', the proteins in the domain CAP are allergy-inducing toxins, although their role in spider toxins has yet to be determined, CRISP-1 is known to induce a dangerous allergic reaction in humans. See also * Ion channel ** Calcium channel () ** Sodium channel () ** Potassium channel Pota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rogério Bertani
Rogério Bertani is a Brazilian arachnologist, active at the Butantan Institute. He is credited as one of the foremost specialists in Theraphosidae Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. , 1,040 species have been identified, with 156 genera. The term "tarantula" is usually used to describe members of the family Theraphosidae, although m ... in the world. He has described several species. References 21st-century Brazilian zoologists Brazilian arachnologists Living people Year of birth missing (living people) {{Brazil-scientist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneutria Eickstedtae
''Phoneutria eickstedtae'' is a species of spider in the family Ctenidae Wandering spiders (''Ctenidae'') are a family of spiders that includes the Brazilian wandering spiders. These spiders have a distinctive longitudinal groove on the top-rear of their oval carapace similar to those of the Amaurobiidae. They are hig ..., found in Brazil. References Ctenidae Spiders of Brazil Spiders described in 2007 {{ctenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneutria Depilata
''Phoneutria depilata'' is a species of spider in the family Ctenidae, found in Central America. Description and Behavior Adult females reach a body length that can be about 4 inches and can have a stride length of more than 10 centimeters. Males are smaller. Carapace brown with a longitudinal black line. Ocular area with brown setae and back oblique band from PLE to anterior dorsal shield of prosoma edge. The chelicerae brown with reddish setae. Sternum endites and labium yellowish-brown dorsally, with yellow dots, ventrally dark brown with four conspicuous series of yellow dots. ''P. depilata'' is an euryphagous predator with a broad diet made up predominantly of arthropods and to a lesser extent of small vertebrates (''Gekkonidae'', ''Hylidae'' and ''Sphaerodactylidae''). The range of eggs per egg sac is 430-1300, and spiderlings emerge 28–34 days after the egg sacs are produced. Sexual maturity occurs after 14-17 molts, and spiders mature 300–465 days after emerging f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederick Octavius Pickard-Cambridge
Frederick Octavius Pickard-Cambridge (3 November 1860 – 9 February 1905) was an English arachnologist. He is sometimes confused with his uncle, Octavius Pickard-Cambridge (1828–1917), who was also an arachnologist and from whom F. O. Pickard-Cambridge picked up his enthusiasm for the study of spiders. Life F. O. Pickard-Cambridge was born in Warmwell, Dorset, where his father was rector. He became a curate at St Cuthbert's church in Carlisle for a few years after having been educated at Sherborne School and Exeter College, Oxford. He left to become a professional biological illustrator, and in 1894–1895 spent several months in the Amazon as a naturalist on board the SS ''Faraday''. He found much of interest on his voyage and began writing papers in 1896 to describe the spiders he discovered. He had a promising career ahead of him, but this promise was not to be fulfilled. Bristowe, writing in the book ''British Spiders'', 1951, said of this time in F. O. Pickard-Cam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneutria Boliviensis
''Phoneutria boliviensis'' is a species of a medically important spider in the family Ctenidae found in Central and South America. Characteristics Male Males have a varied color. The prosoma, legs and sternum are brown, and the opisthosoma is dark. Males grow from 30 to 35 mm in length. Females The females are slightly larger, growing up to 30-40 mm in length, with a yellowish to brownish brown prosoma. There are clipped lateral black lines, a thin longitudinal black band and yellow bands dorsally on the pedipalp. The opisthosoma is dorsally yellowish, with a bright yellow-brownish pair of beams. The ventral part the opisthosoma varies from gold to yellow with two sharp brown spots and two white spots. The chelicerae vary from red to reddish-brown. The legs have two small yellow spots dorsally and thin black transverse stripes. Distribution and Habitat Phoneutria boliviensis lives in both Central and South America. In South America it can be seen in Bolivia, Paraguay, Pe ... [...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] |
Phoneutria Bahiensis
''Phoneutria bahiensis'' is a species of spiders in the family Ctenidae, found in Brazil. It's known in Brazilian Portuguese as Armadeira da Bahia, (Bahia armed spider). Description and Behavior ''Phoneutria bahiensis'' can reach 3.5 cm in body length and 14 cm with leg-span. ''P. bahiensis'' is very similar in appearance to ''Phoneutria fera'' and '' Phoneutria reidyi'': its anterior flat lobe is convex while much more distinct in ''P. fera'', and poorly developed in ''P. reidyi''. The pedipalps are dorsally dark brown, with the retrolateral face of the patella and tibia with barn bands. The opistosome is dorsally dark brown, with yellow-orange bristles. The ventral part is dark brown with four series of light yellow spots. In males, the tibia is equal to or greater than the cambium, and the plunger is straight with a slightly curved tip. The males also have a reduced retrolateral tibial apophysis of the pedipalp. The coloration of the males is similar to that of the females, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Spider Catalog
The World Spider Catalog (WSC) is an online searchable database concerned with spider taxonomy. It aims to list all accepted families, genera and species, as well as provide access to the related taxonomic literature. The WSC began as a series of individual web pages in 2000, created by Norman I. Platnick of the American Museum of Natural History. After Platnick's retirement in 2014, the Natural History Museum of Bern (Switzerland) took over the catalog, converting it to a relational database. , 50,151 accepted species were listed. The order Araneae 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 dive ... (spiders) has the seventh-most species of all orders. The existence of the World Spider Catalog makes spiders the largest taxon with an online listing that is updated regularly. It ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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