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Malacostraca
Eophreatoicus, a fresh water isopod from Australia.
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Latreille, 1802
Subclasses
Eumalacostraca Hoplocarida Phyllocarida See text for orders. Isopoda Phreatoicidea, Ampisopodidae, genus Eophreatoicus - digital photography by Buz Wilson, Australian Museum File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... SubOrders Anthuridea Asellota Calabozoida Epicaridea Flabellifera Microcerberidea Oniscidea Phreatoicidea Valvifera Isopods are one of the most diverse orders of Crustaceans, with many species living in all environments, and are common in shallow marine waters. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Animalia redirects here. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders,scorpions, etc. ... Classes Remipedia Cephalocarida Branchiopoda Ostracoda Maxillopoda Malacostraca The crustaceans (Crustacea) are a large group of arthropods (55,000 species), usually treated as a subphylum. ... Pierre André Latreille. ... Superorders Syncarida Peracarida Eucarida †Pancarida See text for orders. ... Families Superfamily Bathysquillidoidea Family Bathysquillidae Family Indosquillidae Superfamily Erythrosquilloidea Family Erythrosquillidae Superfamily Gonodactyloidea Family Alainosquillidae Family Eurysquillidae Family Gonodactylidae Family Hemisquillidae Family Odontodactylidae Family Protosquillidae Family Pseudosquillidae Family Takuidae Superfamily Lysiosquilloidea Family Coronididae Family Heterosquillidae Family Lysiosquillidae Family Nannosquillidae Family Tetrasquillidae Superfamily Squilloidea Family Harpiosquillidae Family Squillidae Superfamily uncertain Family... Families Nebaliidae Nebaliopsidae Paranebaliidae Leptostraca is an order in the crustacean class Malacostraca whose best-known example is Nebalia. ...

The Malacostraca (Greek: "soft shell") are the largest subgroup of crustaceans and include most of the animals that non-experts recognise as crustaceans, including decapods (such as crabs, lobsters and shrimp), stomatopods (mantis shrimp) and krill. They also include the amphipods and the only substantial group of land-based crustaceans, the isopods (woodlice and related species). With more than 22,000 members, this group represents two thirds of all crustacean species and contains all the larger forms. The first malacostracans appeared in the Cambrian. Classes & Subclasses Branchiopoda Phyllopoda Sarsostraca Remipedia Cephalocarida Maxillopoda Thecostraca Tantulocarida Branchiura Pentastomida Mystacocarida Copepoda Ostracoda Myodocopa Podocopa Malacostraca Phyllocarida Hoplocarida Eumalacostraca The nauplius larva of a dendrobranchiate Porcellio scaber, the common rough woodlouse, a terrestrial crustacean Pollicipes polymerus, the gooseneck barnacle Glyphea pseudastacus, a fossil glypheoid The crustaceans (Crustacea) are... Suborders Dendrobranchiata Pleocyemata See text for superfamilies. ... Superfamilies Dromiacea Homolodromioidea Dromioidea Homoloidea Eubrachyura Raninoidea Cyclodorippoidea Dorippoidea Calappoidea Leucosioidea Majoidea Hymenosomatoidea Parthenopoidea Retroplumoidea Cancroidea Portunoidea Bythograeoidea Xanthoidea Bellioidea Potamoidea Pseudothelphusoidea Gecarcinucoidea Cryptochiroidea Pinnotheroidea * Ocypodoidea * Grapsoidea * An asterisk (*) marks the crabs included in the clade Thoracotremata. ... Subfamilies and Genera Neophoberinae Acanthacaris Thymopinae Nephropsis Nephropides Thymops Thymopsis Nephropinae Homarus Nephrops Homarinus Metanephrops Eunephrops Thymopides Clawed lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans. ... Superfamilies Alpheoidea Atyoidea Bresilioidea Campylonotoidea Crangonoidea Galatheacaridoidea Nematocarcinoidea Oplophoroidea Palaemonoidea Pandaloidea Pasiphaeoidea Procaridoidea Processoidea Psalidopodoidea Stylodactyloidea True shrimp are swimming, decapod crustaceans classified in the infraorder Caridea, found widely around the world in both fresh and salt water. ... Superfamilies and families Bathysquillidoidea Bathysquillidae Indosquillidae Erythrosquilloidea Erythrosquillidae Gonodactyloidea Alainosquillidae Eurysquillidae Gonodactylidae Hemisquillidae Odontodactylidae Protosquillidae Pseudosquillidae Takuidae Lysiosquilloidea Coronididae Heterosquillidae Lysiosquillidae Nannosquillidae Tetrasquillidae Squilloidea Harpiosquillidae Squillidae incertae sedis Parasquillidae Sculdidae Mantis shrimp or stomatopods are marine crustaceans belonging to the order Stomatopoda, one part of the class Malacostraca, the largest... Families Euphausiidae Euphausia Dana, 1852 Meganyctiphanes Holt and W. M. Tattersall, 1905 Nematobrachion Calman, 1905 Nematoscelis G. O. Sars, 1883 Nyctiphanes G. O. Sars, 1883 Pseudeuphausia Hansen, 1910 Stylocheiron G. O. Sars, 1883 Tessarabrachion Hansen, 1911 Thysanoessa Brandt, 1851 Thysanopoda Latreille, 1831 Bentheuphausiidae Bentheuphausia amblyops Krill are shrimp-like marine... Families about 200 partial list Alpheidae Ampeliscidae Amphilochidae Ampithoidae Anisogammaridae Aoridae Artesiidae Bogideillidae Bosminidae Caprellidae Corophiidae Crangonyctidae Eusiridae Gammaridae Hadziidae Haustoriidae Iphimediidae Ischyroceridae Leucothoidae Liljeborgiidae Lysianassidae Melitidae Phoxocephalidae Sebidae Talitridae Amphipoda (amphipods) include about 4600 different species of small, shrimp_like crustaceans. ... SubOrders Anthuridea Asellota Calabozoida Epicaridea Flabellifera Microcerberidea Oniscidea Phreatoicidea Valvifera Isopods are one of the most diverse orders of Crustaceans, with many species living in all environments, and are common in shallow marine waters. ... Infraorders and Families Infraorder Tylomorpha Tylidae Infraorder Ligiamorpha Ligiidae Mesoniscidae Superfamily Trichoniscoidea Buddelundiellidae Trichoniscidae Superfamily Styloniscoidea Schoebliidae Styloniscidae Titaniidae Tunanoniscidae Superfamily Oniscoidea Bathytropidae Berytoniscidae Detonidae Halophilosciidae Olibrinidae Oniscidae Philosciidae Platyarthridae Pudeoniscidae Rhyscotidae Scyphacidae Speleoniscidae Sphaeroniscidae Stenoniscidae Tendosphaeridae Superfamily Armadilloidea Actaeciidae Armadillidae Armadillidiidae Atlantidiidae Balloniscidae Cylisticidae Eubelidae Periscyphicidae Porcellionidae Trachelipodidae incertae... In biology, a species is one of the basic units of biodiversity. ... The Cambrian is a major division of the geologic timescale that begins about 542 ± 1. ...

The classification of crustaceans is currently being debated, and the Malacostraca are regarded by some authors as a class and by others as a subclass. Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... In biology, a subclass is one level below a class. ...

Morphology

General malacostracan Bauplan

Their characteristics include: Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... It has been suggested that this article or section be merged into body plan. ...

• The head has 6 segments, with a pair of antennules and a pair of antennae, as well as mouthparts.
• They have 5 pairs of walking legs, with the first often modified to form pincers.
• There are 8 thoracic segments. The cephalothorax is covered by a carapace form via fusion of 3 of them, letting the 5 other uncovered.
• The abdomen is behind and often used for swimming. There are 6 abdominal segments.
• There are appendages near the mouthparts, these are called maxillipeds.
• They have compound stalked or sessile eyes.
• They have a two-chambered stomach.
• They have a centralised nervous system.

Insects display a wide variety of antennal shapes. ... For other uses, see Antenna. ... The mouthparts of arthropods have evolved into a number of forms, each adapted to a different style of feeding. ... The cephalothorax is an anatomical term used of arachnid and malacostracan arthropods for the first major body section. ... The term carapace refers to a dorsal section of an exoskeleton or shell, in a number of animal groups. ... The abdomen is a part of the body. ... A limb (from the Old English lim) is a jointed appendage of the human or animal branch of a tree; a representative, branch or member of a group or organization. ... Antennules Pereiopods Carapace Pleopods Uropods Telson The body of a decapod crustacean is made up of nineteen body segments grouped into two main body parts, the cephalothorax and the abdomen. ... In anatomy, the stomach is a bean-shaped hollow muscular organ of the gastrointestinal tract involved in the second phase of digestion, following mastication. ... The Human Nervous System The nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions. ...

Classification

Martin and Davis^[1] present the following classification of living malacostracans into orders, to which extinct orders have been added, indicated by †.

Lysiosquilla maculata, a mantis shrimp

Armadillidium vulgare, an isopod

Class Malacostraca Latreille, 1802 Image File history File links Download high resolution version (600x700, 38 KB)Mantis shrimp (Lysiosquilla maculata) in the Haus des Meeres, Vienna. ... Image File history File links Download high resolution version (600x700, 38 KB)Mantis shrimp (Lysiosquilla maculata) in the Haus des Meeres, Vienna. ... Superfamilies and families Bathysquillidoidea Bathysquillidae Indosquillidae Erythrosquilloidea Erythrosquillidae Gonodactyloidea Alainosquillidae Eurysquillidae Gonodactylidae Hemisquillidae Odontodactylidae Protosquillidae Pseudosquillidae Takuidae Lysiosquilloidea Coronididae Heterosquillidae Lysiosquillidae Nannosquillidae Tetrasquillidae Squilloidea Harpiosquillidae Squillidae incertae sedis Parasquillidae Sculdidae Mantis shrimp or stomatopods are marine crustaceans belonging to the order Stomatopoda, one part of the class Malacostraca, the largest... Image File history File links ArmadillidiumVulgare. ... Image File history File links ArmadillidiumVulgare. ... Diversity about 200 species Armadillidium is a genus of the small terrestrial crustacean known as the woodlouse. ... SubOrders Anthuridea Asellota Calabozoida Epicaridea Flabellifera Microcerberidea Oniscidea Phreatoicidea Valvifera Isopods are one of the most diverse orders of Crustaceans, with many species living in all environments, and are common in shallow marine waters. ... Pierre André Latreille. ...

• Subclass Phyllocarida Packard, 1879

• †Order Archaeostraca
• †Order Hoplostraca
• †Order Canadaspidida
• Order Leptostraca Claus, 1880

• Subclass Hoplocarida Calman, 1904

• Order Stomatopoda Latreille, 1817 (mantis shrimp)

• Subclass Eumalacostraca Grobben, 1892
  • Superorder Syncarida Packard, 1885
    • †Order Palaeocaridacea
    • Order Bathynellacea Chappuis, 1915
    • Order Anaspidacea Calman, 1904
  • Superorder Peracarida Calman, 1904
    • Order Spelaeogriphacea Gordon, 1957
    • Order Thermosbaenacea Monod, 1927
    • Order Lophogastrida Sars, 1870
    • Order Mysida Haworth, 1825
    • Order Mictacea Bowman, Garner, Hessler, Iliffe & Sanders, 1985
    • Order Amphipoda Latreille, 1816
    • Order Isopoda Latreille, 1817 (woodlice, slaters)
    • Order Tanaidacea Dana, 1849
    • Order Cumacea Krøyer, 1846
  • Superorder Eucarida Calman, 1904
    • Order Euphausiacea Dana, 1852
    • Order Amphionidacea Williamson, 1973
    • Order Decapoda Latreille, 1802 (crabs, lobsters, shrimp)

Families Nebaliidae Nebaliopsidae Paranebaliidae Leptostraca is an order in the crustacean class Malacostraca whose best-known example is Nebalia. ... Canadaspis was a benthic feeder that moved mainly by walking and dug in the mud in search of its food. ... Families Nebaliidae Nebaliopsidae Paranebaliidae Leptostraca is an order in the crustacean class Malacostraca whose best-known example is Nebalia. ... Families Superfamily Bathysquillidoidea Family Bathysquillidae Family Indosquillidae Superfamily Erythrosquilloidea Family Erythrosquillidae Superfamily Gonodactyloidea Family Alainosquillidae Family Eurysquillidae Family Gonodactylidae Family Hemisquillidae Family Odontodactylidae Family Protosquillidae Family Pseudosquillidae Family Takuidae Superfamily Lysiosquilloidea Family Coronididae Family Heterosquillidae Family Lysiosquillidae Family Nannosquillidae Family Tetrasquillidae Superfamily Squilloidea Family Harpiosquillidae Family Squillidae Superfamily uncertain Family... Families Not necessarily a complete list: Alainosquillidae Bathysquillidae Coronididae Erythrosquillidae Eurysquillidae Gonodactylidae Hemisquillidae Indosquillidae Lysiosquillidae Nannosquillidae Odontodactylidae Parasquillidae Protosquillidae Pseudosquillidae Squillidae Takuidae Tetrasquillidae The Mantis shrimps are the order Stomatopoda of crustaceans. ... Superorders Syncarida Peracarida Eucarida †Pancarida See text for orders. ... Suborders   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida The superorder Peracarida is a large group of crustaceans, having members in marine, freshwater, and terrestrial habitats. ... Genera Mangkurtu Potiicoara Spelaeogriphus Spelaeogriphacea is an order of crustaceans that grow to no more than 10 mm. ... Families Halosbaenidae Monodellidae Thermosbaenidae Tulumellidae Wikispecies has information related to: Thermosbaenacea Thermosbaenacea is a group of crustaceans that live in thermal springs in fresh water, brackish water and anchialine habitats. ... Orders & Families Lophogastrida G. O. Sars, 1870 Eucopiidae Lophogastridae Mysida A. H. Haworth, 1825 Mysidae Lepidomysidae Petalophthalmidae Gnathophausiidae The Mysidacea is a group of small, shrimp-like creatures including the species Neomysis americana (opossum shrimp), comprising the two related orders Mysida and Lophogastrida. ... Orders & Families Lophogastrida G. O. Sars, 1870 Eucopiidae Lophogastridae Mysida A. H. Haworth, 1825 Mysidae Lepidomysidae Petalophthalmidae Gnathophausiidae The Mysidacea is a group of small, shrimp-like creatures including the species Neomysis americana (opossum shrimp), comprising the two related orders Mysida and Lophogastrida. ... Sub-orders Gammaridea Caprellidea Hyperiidea Ingolfiellidea Amphipoda (amphipods) include about 4600 different species of small, shrimp-like crustaceans. ... Suborders Anthuridea Asellota Calabozoida Epicaridea Flabellifera Microcerberidea Oniscidea Phreatoicidea Valvifera Wikispecies has information related to: Isopoda Wikimedia Commons has media related to: Isopoda Isopods are one of the most diverse orders of crustaceans, however they do not have gills, but with many species living in all environments, and are common... Infraorders and Families Infraorder Tylomorpha Tylidae Infraorder Ligiamorpha Ligiidae Mesoniscidae Superfamily Trichoniscoidea Buddelundiellidae Trichoniscidae Superfamily Styloniscoidea Schoebliidae Styloniscidae Titaniidae Tunanoniscidae Superfamily Oniscoidea Bathytropidae Berytoniscidae Detonidae Halophilosciidae Olibrinidae Oniscidae Philosciidae Platyarthridae Pudeoniscidae Rhyscotidae Scyphacidae Speleoniscidae Sphaeroniscidae Stenoniscidae Tendosphaeridae Superfamily Armadilloidea Actaeciidae Armadillidae Armadillidiidae Atlantidiidae Balloniscidae Cylisticidae Eubelidae Periscyphicidae Porcellionidae Trachelipodidae incertae... Families Suborder Anthracocaridomorpha  Family Anthracocarididae Suborder Apseudomorpha  Superfamily Apseudoidea   Family Apseudellidae   Family Apseudidae   Family Gigantapseudidae   Family Kalliapseudidae   Family Metapseudidae   Family Numbakullidae   Family Pagurapseudidae   Family Parapseudidae   Family Sphyrapidae   Family Tanzanapseudidae   Family Whiteleggiidae  Superfamily Jurapseudoidea   Family Jurapseudidae Suborder Neotanaidomorpha   Family Neotanaidae Suborder Tanaidomorpha  Superfamily Cretitanaoidea   Family Cretitanaidae  Superfamily Tanaoidea   Family Tanaidae  Superfamily... Families 8 to 11, See taxonomy Cumacea is an order of small marine crustaceans, occasionally called hooded shrimps. ... Orders Decapoda Euphausiacea Amphionidacea Eucarida is a superorder of crustaceans, comprising the decapods, krill and Amphionides. ... Common name. ... Binomial name Amphionides reynaudii (H. Milne Edwards, 1833) Synonyms Amphion reynaudii H. Milne Edwards, 1833 Amphionides reynaudii is the sole representative of the Order Amphionidacea, and is a small (less than one inch long) planktonic crustacean found throughout the worlds tropical oceans, mostly in shallow waters. ... Suborders Dendrobranchiata Pleocyemata See text for superfamilies. ...

References

1. ^ Joel W. Martin and George E. Davis (2001). An Updated Classification of the Recent Crustacea. Natural History Museum of Los Angeles County. 

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Malacostraca