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Deinopidae
Deinopidae, also known as net casting spiders, is a family of cribellate spiders first described by Carl Ludwig Koch in 1850. It consists of stick-like elongated spiders that catch prey by stretching a web across their front legs before propelling themselves forward. These unusual webs will stretch two or three times their relaxed size, entangling any prey that touch them. The posterior median eyes have excellent night vision, allowing them to cast nets accurately in low-light conditions. These eyes are larger than the others, and sometimes makes these spiders appear to only have two eyes. Ogre-faced spiders ('' Deinopis'') are the best known genus in this family. The name refers to the perceived physical similarity to the mythological creature of the same name. This family also includes the humped-back spiders ('' Menneus''). They are distributed through tropics worldwide from Australia to Africa and the Americas. In Florida, ''Deinopis'' often hangs upside down from a silk line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asianopis
''Asianopis'' is a genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ... of Asian net-casting spiders first described by Y. J. Lin, L. Shao and A. Hänggi in 2020. Species it contains thirty-three species: *'' Asianopis anchietae'' (Brito Capello, 1867) – West Africa, Angola, South Africa *'' Asianopis aruensis'' (Roewer, 1938) – Indonesia (Aru Is.) *'' Asianopis aspectans'' (Pocock, 1900) – Cameroon, Equatorial Guinea, DR Congo, South Africa *'' Asianopis aurita'' (F. O. Pickard-Cambridge, 1902) – Mexico *'' Asianopis camela'' (Thorell, 1881) – New Guinea *'' Asianopis celebensis'' (Merian, 1911) – Indonesia (Sulawesi) *'' Asianopis cornigera'' (Gerstaecker, 1873) – Ethiopia, Rwanda, Burundi, Tanzania, South Africa *'' Asianopis cylindrica'' (Pocock, 1898) – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deinopidae
Deinopidae, also known as net casting spiders, is a family of cribellate spiders first described by Carl Ludwig Koch in 1850. It consists of stick-like elongated spiders that catch prey by stretching a web across their front legs before propelling themselves forward. These unusual webs will stretch two or three times their relaxed size, entangling any prey that touch them. The posterior median eyes have excellent night vision, allowing them to cast nets accurately in low-light conditions. These eyes are larger than the others, and sometimes makes these spiders appear to only have two eyes. Ogre-faced spiders ('' Deinopis'') are the best known genus in this family. The name refers to the perceived physical similarity to the mythological creature of the same name. This family also includes the humped-back spiders ('' Menneus''). They are distributed through tropics worldwide from Australia to Africa and the Americas. In Florida, ''Deinopis'' often hangs upside down from a silk line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menneus
''Menneus'' is a genus of net-casting spiders that was first described by Eugène Simon in 1876. It includes the former genera ''Avella'' and ''Avellopsis''. Species are found in Australia, New Caledonia, and eastern and southern Africa. Originally placed with the cribellate orb-weavers, it was moved to the Deinopidae in 1967. Species it contains fourteen species: *'' Menneus aussie'' Coddington, Kuntner & Opell, 2012 – Australia (Queensland, New South Wales), New Caledonia *'' Menneus bituberculatus'' Coddington, Kuntner & Opell, 2012 – Australia (Queensland), possibly New Guinea *'' Menneus camelus'' Pocock, 1902 – South Africa *''Menneus capensis'' (Purcell, 1904) – South Africa *'' Menneus darwini'' Coddington, Kuntner & Opell, 2012 – Tanzania *'' Menneus dromedarius'' Purcell, 1904 – South Africa, Madagascar *'' Menneus nemesio'' Coddington, Kuntner & Opell, 2012 – Australia (New South Wales) *'' Menneus neocaledonicus'' (Simon, 1888) – New Caledonia *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deinopis
''Deinopis'', also known as net-casting spiders, gladiator spiders and ogre-faced spiders, is a genus of net-casting spiders that was first described by W. S. MacLeay in 1839. Its distribution is widely tropical and subtropical. They catch their prey using a specially spun "net". The name is derived from the Greek (''deinos''), meaning "fearful", and ''opis'', meaning "appearance", referring to their ogre-like faces. The spelling "''Dinopis''" is also found, but is regarded as an "unjustified emendation". Net-casting Spiders in the genus ''Deinopis'' catch their prey in an unusual fashion. They first spin a small upright rectangular cribellate web. This is then detached from its supporting threads and held horizontally above the ground by the spider's long front two pairs of legs while the spider hangs almost vertically. Passing prey is then captured by dropping the "net" over it. Eyes The two posterior median eyes are enlarged and forward-facing. These eyes have a wide field ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cribellate
Cribellum literally means "little sieve", and in biology the term generally applies to anatomical structures in the form of tiny perforated plates. In certain groups of diatoms it refers to microscopically punctured regions of the frustule, or outer layer. In certain groups of spider species, so-called cribellate spiders, the cribellum is a silk spinning organ. Unlike the usual spinnerets of spiders, the cribellum consists of one or more plates covered in thousands of tiny spigots, tiny holes that hardly project from the surface, in contrast to the elongated spigots that project from spinnerets. These minute spigots produce extremely fine fibers, merely tens of nanometres thick, which are combed out by the spider's calamistrum, producing silk with a woolly texture. The fibers are so small in diameter that they are strongly subject to Van der Waals forces. In addition, the fibres have a surface that absorbs waxes from the epicuticle of insect prey on contact. This creates a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneomorphae Families
The Araneomorphae (also called the Labidognatha or "true spiders") 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 (about 93%) of living spiders. Distinguishing characteristics Most spider species are Araneomorphae, which have chelicerae, fangs that face towards each other, increasing the orientations that they can employ during prey-capture. They have fewer book lungs (when present) – usually one pair – and the females typically live one year. The Mygalomorphae have chelicerae, 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 two pairs of book lungs, and the females often live many years. Image:Cheiracanthium pun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabal
''Sabal'' is a genus of New World palms (or fan-palms). Currently, there are 17 recognized species of ''Sabal'', including one hybrid species. Distribution The species are native to the subtropical and tropical regions of the Americas, from the Gulf Coast/South Atlantic states in the Southeastern United States, south through the Caribbean, Mexico, and Central America to Colombia and Venezuela. Description Members of this genus are typically identified by the leaves which originate from a bare, unarmed petiole in a fan-like structure. All members of this genus have a costa (or midrib) that extends into the leaf blade. This midrib can vary in length; and it is due to this variation that leaf blades of certain species of ''Sabal'' are strongly curved or strongly costapalmate (as in ''Sabal palmetto'' and ''Sabal etonia'') or weakly curved (almost flattened), weakly costapalmate (as in ''Sabal minor''). Like many other palms, the fruit of ''Sabal'' are drupe, that typically c ... [...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 Taxonomy (biology), 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 National Museum of Natural History (France), 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 fos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Macleay
Alexander Macleay (also spelt McLeay) MLC FLS FRS (24 June 1767 – 18 July 1848) was a Scottish-Australian leading member of the Linnean Society, a fellow of the Royal Society and member of the New South Wales Legislative Council. Life Macleay was born in Ross-shire, Scotland, eldest son of William Macleay, provost of Wick. Alexander had a classical education, before relocating to London and becoming a wine merchant with his business partner William Sharp – after whom his first son was named. In 1795 he was elected a fellow of the Linnean Society of London, also serving as its secretary, and was also appointed chief clerk in the prisoners of war office. When the office was linked with the Transport Board after war broke out, Macleay became head of the correspondence department and by 1806 secretary. The board was abolished in 1815, and Macleay retired on an annual pension, of £750. Macleay's chief natural history interest was entomology, principally lepidoptery, and h ... [...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 web pages in 2000, created by Norman I. Platnick of the American Museum of Natural History. After his retirement in 2014, the Natural History Museum of Bern took over, converting the catalog to a relational database A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A Relational Database Management System (RDBMS) is a type of database management system that stores data in a structured for .... As of November 22, 2024, 52'487 species are listed, after an average discovery rate of three new species per day. The order Araneae has the seventh-most species of all orders. The WSC's existence makes spiders the largest taxon with an online listing that is updated regular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Frederick Purcell
William Frederick Purcell (18 September 1866 - 3 October 1919) was an English-born South African arachnologist and zoologist. He is regarded as being the founder of modern Arachnology, araneology in South Africa. Early life and education Purcell was born in London, England to Dr Walter P.J. Purcell of Waterford, Ireland, and his wife Sophia W.J. Hertzog of Cape Town. In 1868 the family moved to Cape Colony and settled in Cape Town. He spent most of his childhood on the farm Bergvliet, which was owned by his uncle W.F. Hertzog. From 1881, Purcell studied at South African College, Cape Town, matriculated through the University of the Cape of Good Hope (UCGH) in 1884 and received a BA (with Honours) in mathematics and natural science in 1887 from UCGH. In 1885 and 1887 he provided the Iziko South African Museum, South African Museum with samples of ''Beetle, coleoptera'' obtained at Bergvliet and Prieska. Purcell continued his education in Germany with a focus on the internal s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octavius Pickard-Cambridge
Octavius Pickard-Cambridge FRS (3 November 1828 – 9 March 1917) was an English clergyman and zoologist. He was a keen arachnologist who described and named more than 900 species of spider from a large collection that he made with contributions sent to him by correspondents from around the world. Life and work Pickard-Cambridge was born in Bloxworth rectory, Dorset, the fifth son of Rev. George Pickard, rector and squire of Bloxworth: the family changed its name to Pickard-Cambridge in 1848 after receiving the property left behind by a relative, Charles Owen Cambridge, of Whitminster House in Gloucestershire. Octavius was tutored at home by the poet William Barnes, after failing to receive admission to Winchester College. He also learned to play the violin from Sidney Smith. He then studied law in London before theology at the University of Durham. He was very active and made many friends in this period. He served as steward at steeplechases and presided over the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
