Dipluridae
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Dipluridae
The family Dipluridae, known as curtain-web spiders (or confusingly with other distantly related ones as funnel-web tarantulas) are a group of spiders in the infraorder Mygalomorphae, that have two pairs of booklungs, and chelicerae (fangs) that move up and down in a stabbing motion. A number of genera, including that of the Sydney funnel-web spider (''Atrax''), used to be classified in this family but have now been moved to Hexathelidae. Description Dipluridae lack a rastellum (stout conical spines) on their chelicerae. Their carapace is characterized by the head region not being higher than the thoracic region. Their posterior median spinnerets (silk-extruding organs) are much shorter than their posterior lateral spinnerets, which have three segments, and are elongated (almost as long as their opisthosoma). Most of the species are medium to small-sized spiders; some may measure about 15 mm.Murphy & Murphy 2000 The cave species ''Masteria caeca'' is eyeless. Biology Mem ...
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Masteria Caeca
''Masteria'' is a genus of curtain web spiders that was first described by L. Koch in 1873. They occur in the tropics of Central to South America, Asia and Micronesia, with one species found in Australia. ''M. petrunkevitchi'' males are long and females are long. ''M. lewisi'', ''M. barona'', and ''M. downeyi'' are slightly smaller and have only six eyes. Species it contains 39 species: *'' Masteria aguaruna'' Passanha & Brescovit, 2018 – Peru *'' Masteria aimeae'' (Alayón, 1995) – Cuba *'' Masteria amarumayu'' Passanha & Brescovit, 2018 – Brazil *'' Masteria angienae'' Víquez, 2020 — Costa Rica (Cocos Is.) *'' Masteria barona'' (Chickering, 1966) – Trinidad *'' Masteria caeca'' (Simon Simon may refer to: People * Simon (given name), including a list of people and fictional characters with the given name Simon * Simon (surname), including a list of people with the surname Simon * Eugène Simon, French naturalist and the genus ..., 1892) – Philippines *' ...
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Mygalomorphae
The Mygalomorphae, or mygalomorphs, are an infraorder of spiders, and comprise one of three major groups of living spiders with over 3000 species, found on all continents except Antarctica. Many members are known as trapdoor spiders due to them forming trapdoors over their burrows. Other prominent groups include Australian funnel web spiders and tarantulas, with the latter accounting for around one third of all mygalomorphs. Description This group of spiders comprises mostly heavy-bodied, stout-legged spiders including tarantulas, Australian funnel-web spiders, mouse spiders, and various families of spiders commonly called trapdoor spiders. Like the " primitive" suborder of spiders Mesothelae, they have two pairs of book lungs, and downward-pointing chelicerae. Because of this, the two groups were once believed to be closely related. Later it was realized that the common ancestors of all spiders had these features (a state known as symplesiomorphy). Following the branching ...
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Masteria
''Masteria'' is a genus of curtain web spiders that was first described by L. Koch in 1873. They occur in the tropics of Central to South America, Asia and Micronesia, with one species found in Australia. ''M. petrunkevitchi'' males are long and females are long. ''M. lewisi'', ''M. barona'', and ''M. downeyi'' are slightly smaller and have only six eyes. Species it contains 39 species: *'' Masteria aguaruna'' Passanha & Brescovit, 2018 – Peru *'' Masteria aimeae'' (Alayón, 1995) – Cuba *'' Masteria amarumayu'' Passanha & Brescovit, 2018 – Brazil *'' Masteria angienae'' Víquez, 2020 — Costa Rica (Cocos Is.) *'' Masteria barona'' (Chickering, 1966) – Trinidad *''Masteria caeca'' (Simon Simon may refer to: People * Simon (given name), including a list of people and fictional characters with the given name Simon * Simon (surname), including a list of people with the surname Simon * Eugène Simon, French naturalist and the genus ..., 1892) – Philippines *'' ...
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Diplura (spider)
''Diplura'' is a genus of South American curtain web spiders that was first described by C. L. Koch in 1850. It is found in South America and Cuba belonging to the subfamily Diplurinae. They possess a lyra on their prolateral maxillae. ''Diplura'' species can be distinguished from '' Trechona'' sp. by the number of setae on this lyra. They differ from '' Harmonicon'' sp. by the leg formula (1423 in ''Harmonicon'', rather than 4123 in other genera of the subfamily) and the shape of the lyra bristles. Species it contains eighteen species: *'' Diplura annectens'' ( Bertkau, 1880) – Brazil *'' Diplura argentina'' (Canals, 1931) – Argentina *'' Diplura catharinensis'' ( Mello-Leitão, 1927) – Brazil *'' Diplura erlandi'' ( Tullgren, 1905) – Bolivia *'' Diplura garbei'' (Mello-Leitão, 1923) – Brazil *'' Diplura garleppi'' (Simon Simon may refer to: People * Simon (given name), including a list of people and fictional characters with the given name Simon * Simon (sur ...
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Hexathelidae
Hexathelidae is a family of mygalomorph spiders. It is one of a number of families and genera of spiders known as funnel-web spiders. In 2018, the family was substantially reduced in size by genera being moved to three separate families: Atracidae, Macrothelidae and Porrhothelidae. Atracidae includes the most venomous species formerly placed in Hexathelidae. Description These spiders are medium to large in size, with body lengths ranging from . The body is typically three times longer than it is wide. They are darkly colored, ranging from black to brown, with a glossy carapace covering the front part of the body. Like the related diplurid spiders, the hexathelids have generally long spinnerets. Their moderately long posterior spinnerets and other features make the Hexathelidae appear similar to the Dipluridae, and were considered a subfamily of the latter until 1980. Like other Mygalomorphae (also called the Orthognatha, an infraorder of spiders which includes the true taran ...
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Siremata
''Siremata'' is a genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ... of curtain web spiders first described by V. Passanha & Antônio Domingos Brescovit in 2018. it contains only three species. References External links Dipluridae Mygalomorphae genera {{Mygalomorphae-stub ...
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Striamea
''Striamea'' is a genus of South American curtain web spiders that was first described by Robert Raven Robert John Raven is an Australian arachnologist, being the Head of Terrestrial Biodiversity and the Senior Curator (Arachnida) at the Queensland Museum. Dr Raven has described many species of spider Spiders ( order Araneae) are air-breath ... in 1981. it contains only two species, both found in Colombia: ''S. gertschi'' and ''S. magna''. References Dipluridae Mygalomorphae genera Spiders of South America {{Mygalomorphae-stub ...
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Trechona
''Trechona'' is a genus of South American curtain web spiders that was first described by C. L. Koch in 1850. The venom of at least one species is considered potentially dangerous to humans. Characteristics Spiders of this genus grow up to 5 cm in length, are brownish to blackened, with a '' zebra '' coloring on the abdomen, with clear transverse bands, the lyre is composed of rigid bristles of different sizes. They are spiders of fossorial and nocturnal habits, found in tunnels dug in ravines, also on top of logs or rocks in the forest, this species is very common in the Atlantic forest. Studies show that the venom of T. venosa is more potent than that of the Brazilian yellow scorpion ( Tityus serrulatus). Few recorded accidents, possibly caused by T. rufa. The venom of T. venosa has a lethal dose of 0.070 mg for 20 grams rat by subcutaneous injection, and 0.030 mg by intravenous injection, 2 mg by intramuscular injection results in muscle contractions, p ...
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Linothele
''Linothele'' is a genus of South American curtain web spiders that was first described by Ferdinand Karsch in 1879. The venom of Linothele sp has a median lethal dose of 0.6 mg / kg, two toxins, both of low molecular weight, were isolated in the venom, Ls1 and Ls2. These two toxins have been shown to be quite lethal to white mice by injection into the cerebroventricular region. The lethal dose of Ls1 and Ls2 is 24 and 19 μg / kg respectively, both toxins represent 0.21% and 0.43% of the weight of the whole venom. Species it contains twenty-one species: *'' Linothele cavicola'' Goloboff, 1994 – Ecuador *'' Linothele cristata'' (Mello-Leitão, 1945) – Brazil *'' Linothele curvitarsis'' Karsch, 1879 ( type) – Venezuela *'' Linothele fallax'' (Mello-Leitão, 1926) – Bolivia, Brazil *'' Linothele gaujoni'' (Simon, 1889) – Ecuador *'' Linothele jelskii'' ( F. O. Pickard-Cambridge, 1896) – Peru *'' Linothele longicauda'' (Ausserer, 1871) – Ecuador *'' Linothele macro ...
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Harmonicon (spider)
''Harmonicon'' is a genus of 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 sout ...n curtain web spiders that was first described by F. O. Pickard-Cambridge in 1896. Species it contains four species: *'' Harmonicon audeae'' Maréchal & Marty, 1998 – French Guiana *'' Harmonicon cerberus'' Pedroso & Baptista, 2014 – Brazil *'' Harmonicon oiapoqueae'' Drolshagen & Bäckstam, 2011 – French Guiana *'' Harmonicon rufescens'' F. O. Pickard-Cambridge, 1896 ( type) – Brazil References External links * Dipluridae Mygalomorphae genera {{Mygalomorphae-stub ...
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Linothele Fallax
''Linothele'' is a genus of South American curtain web spiders that was first described by Ferdinand Karsch in 1879. The venom of Linothele sp has a median lethal dose of 0.6 mg / kg, two toxins, both of low molecular weight, were isolated in the venom, Ls1 and Ls2. These two toxins have been shown to be quite lethal to white mice by injection into the cerebroventricular region. The lethal dose of Ls1 and Ls2 is 24 and 19 μg / kg respectively, both toxins represent 0.21% and 0.43% of the weight of the whole venom. Species it contains twenty-one species: *'' Linothele cavicola'' Goloboff, 1994 – Ecuador *'' Linothele cristata'' (Mello-Leitão, 1945) – Brazil *'' Linothele curvitarsis'' Karsch, 1879 ( type) – Venezuela *'' Linothele fallax'' (Mello-Leitão, 1926) – Bolivia, Brazil *'' Linothele gaujoni'' (Simon, 1889) – Ecuador *'' Linothele jelskii'' ( F. O. Pickard-Cambridge, 1896) – Peru *'' Linothele longicauda'' (Ausserer, 1871) – Ecuador *'' Linothele macro ...
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Allothele
''Allothele'' is a genus of African spiders in the family Euagridae. It was first described by R. W. E. Tucker in 1920. Species it contains five species: *'' Allothele australis'' (Purcell Henry Purcell (, rare: September 1659 – 21 November 1695) was an English composer. Purcell's style of Baroque music was uniquely English, although it incorporated Italian and French elements. Generally considered among the greatest Eng ..., 1903) – South Africa *'' Allothele caffer'' (Pocock, 1902) ( type) – South Africa *'' Allothele malawi'' Coyle, 1984 – Malawi, South Africa *'' Allothele regnardi'' (Benoit, 1964) – Congo, Angola *'' Allothele teretis'' Tucker, 1920 – South Africa References Euagridae Mygalomorphae genera Spiders of Africa {{Mygalomorphae-stub ...
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