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Majoidea
The Majoidea are a Superfamily (taxonomy), superfamily of crabs which includes the various spider crabs. Taxonomy In "''A classification of living and fossil genera of decapod crustaceans''" De Grave and colleagues divided Majoidea into six families. The classification has since been revised, with subfamilies Epialtinae and Mithracinae being elevated to families and Hymenosomatidae being moved to its own superfamily. The family composition according to the World Register of Marine Species is as follows: * Epialtidae MacLeay, 1838 * Inachidae MacLeay, 1838 * Inachoididae Dana, 1851 * Macrocheiridae Dana, 1851 * Majidae Samouelle, 1819 – "true" spider crabs * Mithracidae Balss, 1929 * Oregoniidae Garth, 1958 * Priscinachidae Breton, 2009 Notable species within the superfamily include: * Japanese spider crab (''Macrocheira kaempferi''), the largest living species of crab, found on the bottom of the Pacific Ocean. * ''Libinia emarginata'', the portly spider crab, a species of cra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crab
Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropod anatomy), thorax. Their exoskeleton is often Sclerotization, thickened and hard. They generally have Arthropod leg, five pairs of legs, and they have "Pincers (tool), pincers" or "claws" on the ends of the frontmost pair, scientifically termed the ''chelae''. They are present in all the world's oceans, Freshwater crab, in freshwater, and Terrestrial crab, on land, often hiding themselves in small crevices or burrowing into sediment. Crabs are omnivores, feeding on a variety of food, including a significant proportion of Algae eater, algae, as well as Detritivore, detritus and other invertebrates. Crab meat, Crabs are widely consumed by humans as food, with over 1.5 million tonnes Crab fisheries, caught annually. True crabs first appeared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Majidae
Majidae is a family (biology), family of crabs, comprising around 200 Ocean, marine species inside 52 genera, with a carapace that is longer than it is broad, and which forms a point at the front. The arthropod leg, legs can be very long in some species, leading to the name "spider crab". The exoskeleton is covered with bristles to which the crab attaches algae and other items to act as camouflage. Genera The roughly 200 extant and over 50 extinct species are divided among 52 genera in 5 subfamilies: Eurynolambrinae Števčić, 1994 *''Eurynolambrus'' H. Milne-Edwards & Lucas, 1841 Majinae Samouelle, 1819 *''Ageitomaia'' Griffin & Tranter, 1986 *''Anacinetops'' Miers, 1879 *''Choniognathus'' Rathbun, 1932 *''Cyclax (crab), Cyclax'' Dana, 1851 *''Entomonyx'' Miers, 1884 *''Eurynome (crab), Eurynome'' Leach, 1814 *''Jacquinotia'' Rathbun, 1915 *''Kasagia'' Richer de Forges & Ng, 2007 *''Kimbla'' Griffin & Tranter, 1986 *''Leptomithrax'' Miers, 1876 *''Maiopsis'' Faxon, 1893 *''Maja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyas (crab)
''Hyas'' is a genus of oregoniid crabs comprising five extant species: *'' Hyas alutaceus'' Brandt, 1851 *'' Hyas araneus'' (Linnaeus, 1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of ''Systema Naturae'', the starting point of modern zoologic ...) *'' Hyas coarctatus'' Leach, 1815 *'' Hyas lyratus'' Dana, 1851 *'' Hyas ursinus'' Rathbun, 1924 References Majoidea Decapod genera Taxa named by William Elford Leach {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inachidae
Inachidae is a family of crabs, containing 39 genera: *'' Achaeopsis'' Stimpson, 1857 *''Achaeus'' Leach, 1815 *'' Anisonotus'' A. Milne-Edwards, 1879 *'' Anomalothir'' Miers, 1879 *'' Bothromaia'' Williams & Moffitt, 1991 *'' Calypsachaeus'' Manning & Holthuis, 1981 *'' Camposcia'' Latreille, 1829 *'' Capartiella'' Manning & Holthuis, 1981 *'' Chalaroacheus'' De Man, 1902 *'' Chorinachus'' Griffin & Tranter, 1986 *'' Coryrhynchus'' Kingsley, 1879 *'' Cyrtomaia'' Miers, 1886 *'' Dorhynchus'' Wyville Thomson, 1873 *'' Dumea'' Loh & Ng, 1999 *'' Encephaloides'' Wood-Mason & Alcock, 1891 *'' Ephippias'' Rathbun, 1918 *'' Ergasticus'' A. Milne-Edwards, 1882 *'' Ericerodes'' Rathbun, 1897 *'' Erileptus'' Rathbun, 1893 *'' Eucinetops'' Stimpson, 1860 *'' Eurypodius'' Guérin, 1825 *'' Grypacheus'' Alcock, 1895 *''Inachus'' Weber, 1795 *'' Litosus'' Loh & Ng, 1999 *''Macropodia ''Macropodia'' is a genus of crabs, belonging to the family Family (from ) is a Social group, group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyromaia Cuspidata
''Pyromaia cuspidata'', also known as the dartnose pear crab, is a species of crab in the family Inachoididae. This crab appears similar to '' Anasimus latus''. It is a long-legged crab with a trident-shaped rostrum, and occurs in Atlantic waters from North Carolina to west Florida, and in the Gulf of Mexico through the Yucatán Peninsula down to Nicaragua. It is also found in Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the ...n waters. This species lives in depths of on bottoms of mud, sand, or pebbles. References Majoidea Crabs of the Atlantic Ocean Crustaceans described in 1871 {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrocheira Kaempferi
The Japanese giant spider crab (''Macrocheira kaempferi'') is a species of marine crab and is the biggest one that lives in the waters around Japan. At around 3.7 meters, it has the largest leg-span of any arthropod. The Japanese name for this species is ''taka-ashi-gani'', (Japanese: ; ), literally translating to "tall-legged crab". It goes through three main larval stages along with a prezoeal stage to grow to its great size. The genus ''Macrocheira'' contains multiple species. Two fossil species of this genus have been found: ''M. ginzanensis'' and ''M. yabei'', both from the Miocene of Japan. Its diverse taxonomic history is an important part of what these creatures are and how they evolved to be what they are today. They are sought by crab fisheries, and are considered a delicacy in Japan. To prevent overexploitation from harming the species, conservation efforts have been put in place to protect them and their population from overfishing. The Japanese giant spider crab i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epialtidae
Epialtidae is a family of crab Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...s, containing the subfamilies: * Epialtinae MacLeay, 1838 * Pisinae Dana, 1851 * Pliosomatinae Števčić, 1994 * Tychinae Dana, 1851 * Actinotocarcininae References Majoidea Decapod families {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inachoididae
Inachoididae is a family of crabs originally erected by James Dwight Dana in 1852. It was not recognised as a valid family until the early 1980s. Its members closely resemble those of the family Inachidae Inachidae is a family of crabs, containing 39 genera: *'' Achaeopsis'' Stimpson, 1857 *''Achaeus'' Leach, 1815 *'' Anisonotus'' A. Milne-Edwards, 1879 *'' Anomalothir'' Miers, 1879 *'' Bothromaia'' Williams & Moffitt, 1991 *'' Calypsachaeus'' Ma ..., and the Inachoididae could be recognised as a subfamily of that family. *'' Aepinus'' Rathbun, 1897 *'' Anasimus'' A. Milne-Edwards, 1880 *'' Arachnopsis'' Stimpson, 1871 *'' Batrachonotus'' Stimpson, 1871 *'' Collodes'' Stimpson, 1860 *'' Euprognatha'' Stimpson, 1871 *'' Inachoides'' H. Milne-Edwards & Lucas, 1842 *'' Leurocyclus'' Rathbun, 1897 *'' Paradasygyius'' Garth, 1958 *'' Pyromaia'' Stimpson, 1871 References Majoidea Decapod families {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregoniidae
The Oregoniidae are a family of crabs, formerly included in the family Majidae. It contains the four genera ''Chionoecetes'', ''Hyas Hyas (, ; ), in Greek mythology, was a Boeotian who was regarded as the ancestor of the ancient Hyantes (Ὕαντες), who were the aboriginal inhabitants of Boeotia. His name means rain from ''hyô, hyetos.'' Family Hyas was the son of the ...'', '' Macroregonia'', and '' Oregonia''. References Majoidea Decapod families {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Spider Crab
The great spider crab (''Hyas araneus'') is a species of crab found in northeast Atlantic waters and the North Sea, usually below the tidal zone. In 1986, two specimens were captured at the South Shetland Islands off the Antarctic Peninsula The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martin in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica. ..., apparently transported by human agency. It has been feared that the species would have an adverse effect on the native fauna, but there have been no further captures from the region since the 1986 specimens. The great spider crab can moult and get rid of their outer shell/skin. This can take some time but it lets them grow to great size. After they moult they are very vulnerable to predators because of a very soft exoskeleton. References Majoidea Crabs of the Atlantic Ocean Crustacea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Spider Crab
The Japanese giant spider crab (''Macrocheira kaempferi'') is a species of marine crab and is the biggest one that lives in the waters around Japan. At around 3.7 meters, it has the largest leg-span of any arthropod. The Japanese name for this species is ''taka-ashi-gani'', (Japanese: ; ), literally translating to "tall-legged crab". It goes through three main larval stages along with a prezoeal stage to grow to its great size. The genus ''Macrocheira'' contains multiple species. Two fossil species of this genus have been found: ''M. ginzanensis'' and ''M. yabei'', both from the Miocene of Japan. Its diverse taxonomic history is an important part of what these creatures are and how they evolved to be what they are today. They are sought by crab fisheries, and are considered a delicacy in Japan. To prevent overexploitation from harming the species, conservation efforts have been put in place to protect them and their population from overfishing. The Japanese giant spider crab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
