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Uroptychus Singularis
''Uroptychus singularis'' is a species of chirostylid squat lobster first found in Taiwan. This species is distinguished from '' U. australis'' by its single, unpaired terminal spine on its flexor margin of pereopod The decapod (crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various g ...s 2–4.Baba, Keiji, and Chia-Wei Lin. "Five new species of chirostylid crustaceans (Crustacea: Decapoda: Anomura: Chirostylidae) from Taiwan." Zootaxa 1919 (2008): 1-24. References Further reading *Baba, Keiji, et al. "Eumunida Smith, 1883." *Baeza, J. Antonio. "8 Squat lobsters as symbionts and in chemo-autotrophic environments." The Biology of Squat Lobsters 20 (2011): 249. *Osawa, Masayuki, Chia-Wei Lin, and Tin-Yam Chan. "Additional records of Chirostylus and Munidopsis (Crustacea: Decapoda: Galatheoidea) from T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostyloidea
Chirostyloidea is an anomuran superfamily with squat lobster-like representatives. It comprises the three families Chirostylidae, Eumunididae and Kiwaidae. Although representatives of Chirostyloidea are superficially similar to galatheoid squat lobsters, they are more closely related to Lomisoidea and Aegloidea together forming the clade Australopoda. No fossils can be confidently assigned to the Chirostyloidea, although '' Pristinaspina'' may belong either in the family Kiwaidae or Chirostylidae. Genera ; Chirostylidae Ortmann, 1892 *'' Chirostylus'' Ortmann, 1892 *'' Gastroptychus'' Caullery, 1896 *'' Hapaloptyx'' Stebbing, 1920 *'' Uroptychodes'' Baba, 2004 *''Uroptychus'' Henderson, 1888 ; Eumunididae A. Milne-Edwards & Bouvier, 1900 *'' Eumunida'' Smith, 1883 *'' Pseudomunida'' Haig, 1979 ;Kiwaidae ''Kiwa'' is a genus of marine decapods living at deep-sea hydrothermal vents and cold seeps. The animals are commonly referred to as "yeti lobsters" or "yeti crabs", afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squat Lobster
Squat lobsters are dorsoventrally flattened crustaceans with long tails held curled beneath the cephalothorax. They are found in the two superfamilies Galatheoidea and Chirostyloidea, which form part of the decapod infraorder Anomura, alongside groups including the hermit crabs and mole crabs. They are distributed worldwide in the oceans, and occur from near the surface to deep sea hydrothermal vents, with one species occupying caves above sea level. More than 900 species have been described, in around 60 genera. Some species form dense aggregations, either on the sea floor or in the water column, and a small number are commercially fished. Description The two main groups of squat lobsters share most features of their morphology. They resemble true lobsters in some ways, but are somewhat flattened dorsoventrally, and are typically smaller. Squat lobsters vary in carapace length (measured from the eye socket to the rear edge), from in the case of ''Munidopsis aries'', down to o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uroptychus Australis
''Uroptychus'' is a genus of squat lobsters in the family Chirostylidae found across the Indo-Pacific. The genus ''Uroptychus'' contains the following species: *''Uroptychus acostalis'' Baba, 1988 *''Uroptychus aguayoi'' Chace, 1939 *''Uroptychus alcocki'' Ahyong & Poore, 2004 *''Uroptychus alius'' Baba, 2005 *''Uroptychus altus'' Baba, 2005 *''Uroptychus amabilis'' Baba, 1979 *''Uroptychus anacaena'' Baba & Lin, 2008 *''Uroptychus anatonus'' Baba & Lin, 2008 *''Uroptychus armatus'' (A. Milne-Edwards, 1880) *''Uroptychus atlanticus'' Baba & Wicksten, 2017 *''Uroptychus australis'' (Henderson, 1885) *''Uroptychus babai'' Ahyong & Poore, 2004 *''Uroptychus bacillimanus'' Alcock & Anderson, 1899 *''Uroptychus bellus'' Faxon, 1893 *''Uroptychus belos'' Ahyong & Poore, 2004 *''Uroptychus bicavus'' Baba & de Saint Laurent, 1992 *''Uroptychus bispinatus'' Baba, 1988 *''Uroptychus bouvieri'' Caullery, 1896 *''Uroptychus brachydactylus'' Tirmizi, 1964 *''Uroptychus brevipes'' Baba, 1990 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flexion
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relative to the anatomical position of the body parts involved. Anatomists and others use a unified set of terms to describe most of the movements, although other, more specialized terms are necessary for describing unique movements such as those of the hands, feet, and eyes. In general, motion is classified according to the anatomical plane it occurs in. ''Flexion'' and ''extension'' are examples of ''angular'' motions, in which two axes of a joint are brought closer together or moved further apart. ''Rotational'' motion may occur at other joints, for example the shoulder, and are described as ''internal'' or ''external''. Other terms, such as ''elevation'' and ''depression'', describe movement above or below the horizontal plane. Many anatomica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pereopod
The decapod (crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail: Cephalothorax Head #antennules # antennae #mandibles # first maxillae # second maxillae The head also bears the (usually stalked) compound eyes. The distal portion of a mandible or maxilla which has a sensory function is known as a palp. Thorax / pereon #first maxillipeds #second maxillipeds #third maxillipeds #first pereiopods #second pereiopods #third pereiopods #fourth pereiopods #fifth pereiopods Maxillipeds are appendages modified to function as mouthparts. Particularly in the less advanced decapods, these can be very similar to the pereiopods. Pereiopods are primarily walking legs and are also used for gathering food. They are also the ten legs from which decapods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squat Lobsters
Squat lobsters are dorsoventrally flattened crustaceans with long tails held curled beneath the cephalothorax. They are found in the two superfamilies Galatheoidea and Chirostyloidea, which form part of the decapod infraorder Anomura, alongside groups including the hermit crabs and mole crabs. They are distributed worldwide in the oceans, and occur from near the surface to deep sea hydrothermal vents, with one species occupying caves above sea level. More than 900 species have been described, in around 60 genera. Some species form dense aggregations, either on the sea floor or in the water column, and a small number are commercially fished. Description The two main groups of squat lobsters share most features of their morphology. They resemble true lobsters in some ways, but are somewhat flattened dorsoventrally, and are typically smaller. Squat lobsters vary in carapace length (measured from the eye socket to the rear edge), from in the case of '' Munidopsis aries'', down to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
