Macrophthalmus Dentatus
''Macrophthalmus dentatus'' is a species of crab in the family Macrophthalmidae The Macrophthalmidae are a family of crabs, comprising these subfamilies and genera: ;Ilyograpsinae Števčić, 2005 *'' Apograpsus'' Komai & Wada, 2008 *'' Ilyograpsus'' Barnard, 1955 ;Macrophthalminae Dana, 1851 *'' Australoplax'' Barnes, 1966 .... It was described by Simpson in 1858. References Ocypodoidea Crustaceans described in 1858 {{decapoda-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period. Description Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a pair of chelae (claws). Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to . Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation. Environment Crabs are found in all of the world's oceans, as well as in fresh w ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Macrophthalmidae
The Macrophthalmidae are a family of crabs, comprising these subfamilies and genera: ;Ilyograpsinae Števčić, 2005 *'' Apograpsus'' Komai & Wada, 2008 *'' Ilyograpsus'' Barnard, 1955 ;Macrophthalminae Dana, 1851 *'' Australoplax'' Barnes, 1966 *'' Enigmaplax'' Davie, 1993 *'' Hemiplax'' Heller, 1865 *'' Lutogemma'' Davie, 2008 *''Macrophthalmus ''Macrophthalmus'' is a genus of crabs which are widespread across the Indo-Pacific. It contains the following species (arranged into subgenera In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the Inter ...'' Desmarest, 1823 *'' Tasmanoplax'' Barnes, 1967 *'' Venitus'' Barnes, 1967 ;Tritodynamiinae Števčić, 2005 *'' Tritodynamia'' Ortmann, 1894 References Ocypodoidea Decapod families {{crab-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Ocypodoidea
The Ocypodoidea, or ocypoid crabs, are a superfamily of crabs, named after the genus ''Ocypode''. It contains over 300 extant species in these eight families: * Camptandriidae Stimpson, 1858 * Dotillidae Stimpson, 1858 * Heloeciidae H. Milne-Edwards, 1852 * Macrophthalmidae Dana, 1851 * Mictyridae Dana, 1851 * Ocypodidae The Ocypodidae are a family of semiterrestrial crabs that includes the ghost crabs and fiddler crabs. They are found on tropical and temperate shorelines around the world. Some genera previously included in the family are now treated as members o ... Rafinesque, 1815 * Ucididae Števčić, 2005 * Xenophthalmidae Stimpson, 1858 References Crabs Taxa named by Constantine Samuel Rafinesque Arthropod superfamilies {{crab-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |