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List Of Crabs Of New Zealand
In the waters in and around New Zealand, 77 living species of crabs (and 10 species of crab-like Anomura) have been recorded, along with a further 24 species of fossil crabs (marked with an obelisk). Of the extant crabs, 37 are endemic to New Zealand (marked in boldface). The taxonomy below follows Ng ''et al.'' (2008) for the extant species, and De Grave ''et al.'' (2009) for the fossils. Almost all the species are marine, with a single freshwater species, ''Amarinus lacustris'' (Hymenosomatidae). An updated checklist published in 2010 lists 167 species of Brachyura, plus a little over 50 species of crab-like Anomura. This list (of N.Z. Decapoda) has been republished with annotations in 2011. Brachyura Section Dromiacea ;Dromiidae *'' Petalomera wilsoni'' (Fulton & Grant, 1902) ;Homolidae *'' Dagnaudus petterdi'' (Grant, 1905) *'' Homola orientalis'' Henderson, 1888 *'' Yaldwynopsis spinimanus'' (Griffin, 1965) ;Latreilliidae *''Eplumula australiensis'' (Henderson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anomura
Anomura (sometimes Anomala) is a group of Decapoda, decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word ''crab'', all true crabs are in the sister group to the Anomura, the Brachyura (the two groups together form the clade Meiura). Description The name Anomura derives from an old classification in which Reptantia, reptant decapods were divided into Macrura (long-tailed), Brachyura (short-tailed) and Anomura (differently-tailed). The alternative name Anomala reflects the unusual variety of forms in this group; whereas all crabs share some obvious similarities, the various groups of anomurans are quite dissimilar. The group has been moulded by several instances of carcinisation – the development of a crab-like body form. Thus, the king crabs (Lithodidae), porcelain crabs (Porcellanidae) and hairy stone crab (Lomisidae) are all separate instances of carcinisation. As decapods (meaning ''ten-legged''), anomurans have ten pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyreidus Waitakiensis
''Lyreidus'' is a genus of crabs in the family Raninidae, containing the following species: *''Lyreidus brevifrons'' Sakai, 1937 *''Lyreidus stenops'' Wood-Mason, 1887 *''Lyreidus tridentatus ''Lyreidus tridentatus'' is a species of crab in the family Raninidae. Description This species as an unusual carapace in that it is longer than it is wide. Males grow to about 5.2 cm long and 1.3 cm wide. Females grow to 3 cm wi ...'' de Haan, 1841 References Crabs {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyreidus Tridentatus
''Lyreidus tridentatus'' is a species of crab in the family Raninidae. Description This species as an unusual carapace in that it is longer than it is wide. Males grow to about 5.2 cm long and 1.3 cm wide. Females grow to 3 cm wide and about 4.9 cm long. They have a reddish to reddish-brown body, with a reticulated pattern. The pereopods are pale-pinkish tan colour. Distribution ''Lyreidus tridentatus'' occurs in Australia, New Zealand, New Caledonia, China, Taiwan, Japan, Fiji, and Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat .... Habitat This species lives on shelves and slope substrates in sandy mud. References External links Image Crabs Crustaceans described in 1841 {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyreidus Elegans
''Lyreidus'' is a genus of crabs in the family Raninidae, containing the following species: *''Lyreidus brevifrons'' Sakai, 1937 *''Lyreidus stenops'' Wood-Mason, 1887 *''Lyreidus tridentatus ''Lyreidus tridentatus'' is a species of crab in the family Raninidae. Description This species as an unusual carapace in that it is longer than it is wide. Males grow to about 5.2 cm long and 1.3 cm wide. Females grow to 3 cm wi ...'' de Haan, 1841 References Crabs {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raninidae
Raninidae is a family of unusual crabs, sometimes known as "frog crabs", on account of their frog-like appearance. They are taken by most scientists to be quite primitive among the true crabs. They closely resemble the (unrelated) mole crabs, due to parallel evolution or convergent evolution. In both groups, the claws are modified into tools for digging, and the body is a rounded shape that is easy to bury in sand. Unlike most other true crabs, the abdomens of raninids are not curled under the cephalothorax. They spend most of their time buried in the sand with their eyes popping out so they can grab unaware prey. They also emerge for mating. Raninids are omnivores and some have been found to have consumed Sardinella, crab, shrimp, bivalve, ray, hydroid, copepod, and squid. The earliest fossil attributable to the family Raninidae dates from the Albian. Description Raninids dorsal surfaces have varying textures; smooth, pitted, granular, inclined or fungiform nodes, eroded, sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raninoida
Raninoida is a taxonomic section of the crabs, containing a single superfamily, Raninoidea. This group of crabs is unlike most, with the abdomen not being folded under the thorax. It comprises 46 extant species, and nearly 200 species known only from fossils. Below is a cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to d ... showing Raninoidea's placement within Brachyura: References Crabs Taxa named by Wilhem de Haan {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eplumula Australiensis
''Eplumula'' is a genus of crabs in the family Latreilliidae. It is found off the coasts of eastern Asia, commonly China, Japan, and Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort .... References Dromiacea Decapod genera {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latreilliidae
Latreilliidae is a small family of crabs. They are relatively small, long-legged crabs found on soft bottoms at depths of up in mostly tropical and subtemperate waters around the world. Their carapace is very small and doesn’t cover the bases of their legs, which protrude from the cephalothorax in a spider-like manner. The family and its type genus are named after Pierre André Latreille. The oldest known fossils from the Latreillidae have been dated to the middle of the Cretaceous period. It comprises seven extant species. Distribution Most species in Latreilliidae are relatively concentrated in the Indo-Pacific region, but sometimes may be found in adjacent regions. They are usually found in the mesopelagic zone of these regions. Five of the seven species are located mainly in this region(''L. metanesa, L. pennifera, L. valida, E. australiensis,'' and ''E. phalangium''). Sightings of some of these species have been reported outside of this region: ''L. metanesa'' have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
