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Pilumnoidea
Pilumnoidea is a superfamily of crabs, whose members were previously included in the Xanthoidea. The three families are unified by the free articulation of all the segments of the male crab's abdomen and by the form of the gonopods. The earliest fossils assigned to this group are of Eocene age. Classification Pilumnidae is by far the largest of the three families, with 73 of the 78 genera: ; Pilumnidae Samouelle, 1819 * Subfamily Calmaniinae Števčić, 1991 ** '' Calmania'' Laurie, 1906 * Subfamily Pilumninae Samouelle, 1819 ** '' Actumnus'' Dana, 1851 ** '' Aniptumnus'' Ng, 2002 ** '' Bathypilumnus'' Ng & L. W. H. Tan, 1984 ** '' Benthopanope'' Davie, 1989 ** '' Budapanopeus'' † Müller & Collins, 1991 ** '' Cryptopilumnus'' Hsueh, Huang & Ng, 2009 ** '' Danielum'' Vázquez-Bader & Gracia, 1995 ** '' Eohalimede'' † Blow & Manning, 1996 ** '' Eopilumnus'' † Beschin ''et al.'', 2002 ** '' Eumorphactaea'' † Bittner, 1875 ** '' Eurycarcinus'' A. Milne-Edwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galenidae
Galenidae is a family of crabs, one of three in the superfamily Pilumnoidea. It contains four genera, three of which are monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec .... At present five species have been described in this family. Genera and species *'' Dentoxanthus'' Stephensen, 1946Davie, P. (2012). Dentoxanthus iranicus Stephensen, 1945. Geraadpleegd via: World Register of Marine Species op http://www.marinespecies.org/aphia.php?p=taxdetails&id=442348 **''Dentoxanthus iranicus'' (monotypic) *'' Galene'' De Haan, 1833 **''Galene bispinosa'' (monotypic) *'' Halimede'' De Haan, 1835 **''Halimede fragifer'' **''Halimede octhodes'' *'' Parapanope'' De Man, 1895 **''Parapanope euag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Tanaocheles
''Tanaocheles'' is a genus of crabs, the only genus in the family Tanaocheleidae. It contains two species, ''T. bidentata'' and ''T. stenochilus''. The two species were formerly placed in different families, and they were only shown to be related, and placed in a new subfamily (now elevated to the taxonomic rank of family), in 2000. ''Tanaocheles bidentata'' Originally described as ''Chlorodius bidentatus'', and later called ''Chlorodiella bidentata'', ''Tanaocheles bidentata'' was assigned for a long time to the Xanthidae. ''Tanaocheles stenochilus'' ''Tanaocheles stenochilus'' was described in 1989 from material collected in Guam, where it lives among colonies of the stony coral ''Leptoseris gardineri''. It was originally placed in the Trapeziidae Trapeziidae is a family of crabs, commonly known as coral crabs. All the species in the family are found in a close symbiosis with cnidarians. They are found across the Indo-Pacific, and can best be identified to the species l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilumnus Hirtellus
''Pilumnus hirtellus'', the bristly crab or hairy crab, is a species of European crab. It is less than long and covered in hair. It lives in shallow water and feeds on carrion. Description ''Pilumnus hirtellus'' is a small crab, with a carapace up to wide and long. The carapace and legs are reddish brown or purple, with the inner surfaces of the legs orange or paler. Both the carapace and the walking legs have a dense covering of setae. The first pair of legs bear large chelae (claws), of which one, usually the right claw, is larger than the other, and the fingers of both claws are brown. The claws are smaller and less hairy in females. Young crabs are less than in size, and are chalky white all over. The front edge of the carapace has five teeth on either side, with the first two being smaller than the others. Distribution ''Pilumnus hirtellus'' is found from the North Sea to Morocco, the Azores, Madeira, the Canary Islands and the Cape Verde Islands, as well as in the Medit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actumnus
''Actumnus'' is a genus of crabs in the family Pilumnidae. Alongside the 28 extant species, it has a fossil record extending back into the Miocene. Species ''Actumnus'' contains 28 extant species: *'' Actumnus amirantensis'' Rathbun, 1911 *'' Actumnus anthelmei'' Ward, 1942 *'' Actumnus arbutum'' Alcock, 1898 *'' Actumnus asper'' (Rüppell, 1830) *'' Actumnus calypso'' (Herbst, 1801) *'' Actumnus davoensis'' Ward, 1941 *'' Actumnus digitalis'' (Rathbun, 1907) *'' Actumnus dorsipes'' (Stimpson, 1858) *'' Actumnus elegans'' De Man, 1888 *'' Actumnus fissifrons'' Alcock, 1898 *'' Actumnus forficigerus'' (Stimpson, 1858) *'' Actumnus globulus'' Heller, 1891 *'' Actumnus granotuberosus'' Garth & Kim, 1983 *'' Actumnus griffini'' Takeda & Webber, 2006 *'' Actumnus intermedius'' Balss, 1922 *'' Actumnus margarodes'' MacGilchrist, 1905 *'' Actumnus marissinicus'' Takeda & Miyake, 1977 *'' Actumnus miliaris'' A. Milne-Edwards, 1865 *'' Actumnus obesus'' Dana, 1852 *'' Actumnus parvulus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthoidea
Xanthoidea is a superfamily of crabs, comprising the three families Xanthidae, Panopeidae and Pseudorhombilidae. Formerly, a number of other families were included in Xanthoidea, but many of these have since been removed to other superfamilies. These include Carpilioidea, Eriphioidea, Hexapodoidea, Pilumnoidea and Trapezioidea. Even in this reduced state, Xanthoidea remains one of the most species-rich superfamilies of crabs. Families The World Register of Marine Species lists the following families: *Panopeidae Ortmann, 1893 * Pseudorhombilidae Alcock, 1900 *Xanthidae Xanthidae is a family of crabs known as gorilla crabs, mud crabs, pebble crabs or rubble crabs. Xanthid crabs are often brightly coloured and are highly poisonous, containing toxins which are not destroyed by cooking and for which no antidote is ... MacLeay, 1838 References External links * Crabs Arthropod superfamilies {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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