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Uroptychus Anatonus .Baba, Keiji, and Chia-Wei Lin. "Five new species of chirostylid crustaceans (Crustacea: Decapoda: Anomura: Chirostylidae) from Taiwan." Zootaxa 1919 (2008): 1-24.
''Uroptychus anatonus'' is a species of chirostylid squat lobster first found in Taiwan. ''U. anatonus'' and '' U. anacaena'' are similar but can be distinguished from each other by the shape of their 4th sternite and the length of their antennal scale. Both species resemble '' U. maori'' and '' U. brucei'', but lack a ventral subterminal spine on their first pereopod's ischium The ischium () form ... References Further reading *Baba, Keiji, et al. "Eumunida Smith, 1883." *Osawa, Masayuki, Chia-Wei Lin, and Tin-Yam Chan. "A ...[...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 Anacaena .Baba, Keiji, and Chia-Wei Lin. "Five new species of chirostylid crustaceans (Crustacea: Decapoda: Anomura: Chirostylidae) from Taiwan." Zootaxa 1919 (2008): 1-24.
''Uroptychus anacaena'' is a species of chirostylid squat lobster first found in Taiwan. ''U. anacaena'' and '' U. anatonus'' are similar but can be distinguished from each other by the shape of their 4th sternite and the length of their antennal scale. Both species resemble '' U. maori'' and '' U. brucei'', but lack a ventral subterminal spine on their first pereopod's ischium The ischium () form ... References Further reading *Baba, Keiji, et al. "Eumunida Smith, 1883."External links *[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sternite
The sternum (pl. "sterna") is the ventral portion of a segment of an arthropod thorax or abdomen. In insects, the sterna are usually single, large sclerites, and external. However, they can sometimes be divided in two or more, in which case the subunits are called sternites, and may also be modified on the terminal abdominal segments so as to form part of the functional genitalia, in which case they are frequently reduced in size and development, and may become internalized and/or membranous. For a detailed explanation of the terminology, see Kinorhynchs have tergal and sternal plates too, though seemingly not homologous with those of arthropods.Sørensen, M. V. et al. Phylogeny of Kinorhyncha based on morphology and two molecular loci. PLoS One 10, 1–33 (2015). Ventrites are externally visible sternites. Usually the first sternite is covered up, so that vertrite numbers do not correspond to sternid numbers. The term is also used in other arthropod groups such as crustaceans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antenna (biology)
Antennae ( antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments. While they are typically sensory organs, the exact nature of what they sense and how they sense it is not the same in all groups. Functions may variously include sensing touch, air motion, heat, vibration (sound), and especially smell or taste. Antennae are sometimes modified for other purposes, such as mating, brooding, swimming, and even anchoring the arthropod to a substrate. Larval arthropods have antennae that differ from those of the adult. Many crustaceans, for example, have free-swimming larvae that use their antennae for swimming. Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uroptychus Maori
''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] |
Uroptychus Brucei
''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] |
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] |
Ischium
The ischium () forms the lower and back region of the (''os coxae''). Situated below the ilium and behind the pubis, it is one of three regions whose fusion creates the . The superior portion of this region forms approximately one-third of the acetabulum. |
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] |
