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Dwarf Tarantula
Dwarf tarantulas, also known as sheet funnel-web spiders are a type of spider from the family Mecicobothriidae. Dwarf tarantulas are one of several families of the suborder Mygalomorphae; this larger group also includes the true tarantulas. Description Dwarf tarantulas, as the name indicates, appear very similar to tarantulas, but are physically much smaller. Many specimens are smaller than 1 cm in length, and the largest in the family are seldom larger than 2 cm. The spiders, like all Mygalomorphae, have downward pointing fangs; dwarf tarantulas also have long spinnerets. Genera There is currently only 1 recognized genus in this family: '' Mecicobothrium'' Holmberg, 1882 * ''Mecicobothrium baccai'' Lucas et al., 2006 — Brazil * '' Mecicobothrium thorelli'' Holmberg, 1882 — Argentina, Uruguay Genera moved to other families include: *'' Hexura'' Simon, 1884 → Antrodiaetidae *''Hexurella'' Gertsch & Platnick, 1979 → Hexurellidae *'' Megahexura'' Kaston, 1972 → ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecicobothrium Thorelli
''Mecicobothrium thorelli'' is a spider in the family Mecicobothriidae, native to Argentina and Uruguay. It was first described in 1882 by Holmberg. The specific name ''thorelli'' honours Tamerlan Thorell Tord Tamerlan Teodor Thorell (3 May 1830 – 22 December 1901) was a Swedish arachnologist. Thorell studied spiders with Giacomo Doria at the Museo Civico di Storia Naturale de Genoa. He corresponded with other arachnologists, such as Octavius P .... The species is most abundant in autumn and winter. References Mygalomorphae Spiders of South America Spiders described in 1882 {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antrodiaetidae
Antrodiaetidae, also known as folding trapdoor spiders or folding-door spiders, is a small spider family related to atypical tarantulas. They are found almost exclusively in the western and midwestern United States, from California to Washington and east to the Appalachian mountains. Exceptions include ''Antrodiaetus roretzi'' and ''Antrodiaetus yesoensis'', which are endemic to Japan and are considered relict species. It is likely that two separate vicariance events led to the evolution of these two species. Genera , the World Spider Catalog accepted the following genera: *''Aliatypus'' Smith, 1908 — United States *''Antrodiaetus'' Ausserer, 1871 — United States, Japan *''Atypoides'' O. Pickard-Cambridge, 1883 — United States *''Hexura'' Simon, 1884 — United States Name The name “folding-door” describes how they open or close the entrance to their burrow; they unfold or fold the door. See also * List of Antrodiaetidae species This page lists all described gene ... [...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 separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Families
Spider taxonomy is that part of taxonomy that is concerned with the science of naming, defining and classifying all spiders, members of the Araneae order of the arthropod class Arachnida with more than 48,500 described species. However, there are likely many species that have escaped the human eye to this day, and many specimens stored in collections waiting to be described and classified. It is estimated that only one third to one half of the total number of existing species have been described. Arachnologists currently divide spiders into two suborders with about 129 families. Due to constant research, with new species being discovered every month and others being recognized as synonyms, the number of species in the families is bound to change and only reflects the present state of knowledge. Nevertheless, the species numbers given here are useful as a guideline – see the table of families at the end of the article. History Spider taxonomy can be traced to the work of Swedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megahexuridae
''Megahexura'' is a genus of spider 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 ...s with the sole species ''Megahexura fulva''. It is the only genus in the family Megahexuridae. Native to the United States, the spiders build an exposed sheet web with a funnel-shaped retreat in holes and crevices along ravine banks. References Monotypic Mygalomorphae genera Mygalomorphae {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megahexura
''Megahexura'' is a genus of spider 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 d ...s with the sole species ''Megahexura fulva''. It is the only genus in the family Megahexuridae. Native to the United States, the spiders build an exposed sheet web with a funnel-shaped retreat in holes and crevices along ravine banks. References Monotypic Mygalomorphae genera Mygalomorphae {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexurellidae
''Hexurella'' is a genus of spiders, found in the United States and Mexico. It is the only genus in the family Hexurellidae. Species , the World Spider Catalog accepted the following species: *''Hexurella apachea'' Gertsch & Platnick, 1979 – US *''Hexurella encina'' Gertsch & Platnick, 1979 – Mexico *''Hexurella pinea'' Gertsch & Platnick, 1979 (type species) – US *''Hexurella rupicola ''Hexurella rupicola'' is a species of spider native to the United States. It was first described by Gertsch and Platnick in 1979. It is from the family Hexurellidae. References Spiders of the United States Mygalomorphae Spiders describe ...'' Gertsch & Platnick, 1979 – US References Mygalomorphae genera Mygalomorphae {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexura
''Hexura'' is a genus of American folding trapdoor spiders that was first described by Eugène Louis Simon in 1884. it contains two species, found in the United States: '' H. picea'' and '' H. rothi''. Originally placed with Mecicobothriidae Dwarf tarantulas, also known as sheet funnel-web spiders are a type of spider from the family Mecicobothriidae. Dwarf tarantulas are one of several families of the suborder Mygalomorphae; this larger group also includes the true tarantulas. Desc ..., it was moved to Antrodiaetidae in 2019. See also * List of Antrodiaetidae species References Antrodiaetidae Mygalomorphae genera Spiders of the United States Spiders of Canada {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eduardo Ladislao Holmberg
Eduardo Ladislao Holmberg (27 July 1852, in Buenos Aires – 4 November 1937) was an Argentine natural historian and novelist, one of the leading figures in Argentine biology. Together with Florentino Ameghino he undertook the inventory of Argentine flora and fauna, and explored all the ecoregions in the country, summarizing for the first time the biodiversity of its territory. The son of botanical aficionado and grandson of the Baron Holmberg, Holmburg accompanied Argentine '' Libertador'' Manuel Belgrano on his campaigns and introduced the cultivation of the ''camellia'' to Argentina. As director of the Buenos Aires Zoological Garden he greatly developed its scientific aspect, publishing booklets and providing printed media for a learned appreciation of its contents. He also directed the Natural History Cabinet of the University of Buenos Aires and published the standard reference works on botany and zoology used in his country for most of the 20th century. While less di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecicobothrium Baccai
''Mecicobothrium'' is a genus of dwarf tarantulas first described by Eduardo Ladislao Holmberg in 1882. These spiders have three tarsal claws. The cephalic groove (fovea) is longitudinal. The abdomen has plates. The male palpal bulb lies in a long modified final joint. The posterior lateral spinnerets are very long, with the last joint whiplike. Species , the genus contained only two species: * '' Mecicobothrium baccai'' Lucas et al., 2006 — Brazil * ''Mecicobothrium thorelli ''Mecicobothrium thorelli'' is a spider in the family Mecicobothriidae, native to Argentina and Uruguay. It was first described in 1882 by Holmberg. The Specific name (zoology), specific name ''thorelli'' honours Tamerlan Thorell. The species is ...'' Holmberg, 1882 — Argentina, Uruguay References Mygalomorphae Mygalomorphae genera Taxa named by Eduardo Ladislao Holmberg {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
