#subclass_Malacostraca__Malacostraca  largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies
  supertype:  #class.aggregation__clas__family  a collection of things sharing a common attribute; "there are two classes of detergents"
  member of:  #class_Crustacea
  member:  #malacostracan_crustacean__malacostracancrustacean  a major subclass of crustaceans
  member:  #Decapoda__order_Decapoda  lobsters; crayfish; crabs; shrimps; prawns
     member:  #decapod_crustacean__decapodcrustacean__decapod  crustaceans characteristically having five pairs of locomotor appendages each joined to a segment of the thorax
     member:  #suborder_Reptantia__Reptantia  lobsters; crabs
        member:  #suborder_Brachyura__Brachyura  an order of crustaceans (including true crabs) having a reduced abdomen folded against the ventral surface
           member:  #brachyuran  typical crabs
           member:  #crab  decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers
           member:  #genus_Menippe__Menippe  stone crabs
              member:  #Menippe_mercenaria__stone_crab__stonecrab  large edible crab of S coat of United States especially Florida
           member:  #family_Cancridae__Cancridae  many of the best known edible crabs
              member:  #genus_Cancer__Cancer  type genus of the family Cancridae
                 member:  #Cancer_magister__Dungeness_crab  small edible crab of Pacific coast of North America
                 member:  #rock_crab__Cancer_irroratus  crab of eastern coast of North America
                 member:  #Jonah_crab__Cancer_borealis  large red deep-water crab of the eastern coast of North America
           member:  #family_Portunidae__Portunidae  swimming crabs
              member:  #swimming_crab  marine crab with some legs flattened and fringed for swimming
              member:  #genus_Portunus__Portunus  type genus of the family Portunidae
                 member:  #English_lady_crab__Portunus_puber  crab of the English coasts
              member:  #genus_Ovalipes__Ovalipes  a genus of Portunidae
                 member:  #American_lady_crab__lady_crab__calico_crab__Ovalipes_ocellatus  brightly spotted crab of sandy beaches of the United States Atlantic coast
              member:  #genus_Callinectes__Callinectes  New World blue crabs
                 member:  #Callinectes_sapidus__blue_crab  bluish edible crab of Atlantic and Gulf coasts of North America
           member:  #genus_Uca__Uca  fiddler crabs
              member:  #fiddler_crab__fiddlercrab  burrowing crab of American coastal regions having one claw much enlarged in the male
           member:  #family_Pinnotheridae__Pinnotheridae  tiny soft-bodied crabs
              member:  #genus_Pinnotheres__Pinnotheres  type genus of the family Pinnotheridae: pea crabs
                 member:  #pea_crab__peacrab  tiny soft-bodied crab living commensally in the mantles of certain bivalve mollusks
                 member:  #oyster_crab__Pinnotheres_ostreum  tiny soft-bodied crab living within the mantle cavity of oysters
           member:  #family_Lithodidae__Lithodidae  deep-sea crabs of cold waters
              member:  #genus_Paralithodes__Paralithodes  a genus of Lithodidae
                 member:  #Paralithodes_camtschatica__king_crab__Alaska_crab__Alaskan_king_crab__Alaska_king_crab  large edible crab of North Pacific waters especially along the coasts of Alaska and Japan
           member:  #family_Majidae__Majidae  spider crabs
              member:  #spider_crab  any of numerous crabs with very long legs and small triangular bodies
              member:  #genus_Maja__Maja__Maia__genus_Maia  type genus of the Majidae; nearly cosmopolitan
                 member:  #European_spider_crab__king_crab__Maja_squinado  large European spider crab
              member:  #genus_Macrocheira__Macrocheira  giant crabs of Japan
                 member:  #giant_crab__giantcrab__Macrocheira_kaempferi  very large deep-water Japanese crab
        member:  #lobster  any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae
        member:  #family_Homaridae__Homaridae  large-clawed lobsters
           member:  #true_lobster  large edible marine crustaceans having large pincers on the first pair of legs
           member:  #genus_Homarus__Homarus  type genus of the family Homaridae: common edible lobsters
              member:  #Homarus_americanus__American_lobster__Northern_lobster__Maine_lobster  lobster of Atlantic coast of America
              member:  #Homarus_vulgaris__European_lobster  lobster of Atlantic coast of Europe
                 member:  #European_lobster  similar to but smaller than American lobsters
              member:  #Cape_lobster__Homarus_capensis  small lobster of southern Africa
     member:  #family_Nephropsidae__Nephropsidae  in some classifications coextensive with the Homaridae
        member:  #genus_Nephrops__Nephrops  a genus of Nephropsidae
     member:  #family_Palinuridae__Palinuridae  spiny lobsters
        member:  #genus_Palinurus__Palinurus  type genus of the family Palinuridae
           member:  #crawfish__spiny_lobster__spinylobster__langouste__rock_lobster__crayfish__sea_crawfish__seacrawfish  large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
     member:  #family_Astacidae__Astacidae__Astacura  crayfish
        member:  #crawdaddy__crayfish__crawfish__crawdad  small freshwater decapod crustacean that resembles a lobster
        member:  #genus_Astacus__Astacus  type genus of the family Astacidae; Old World crayfish
           member:  #Old_World_crayfish__ecrevisse  small crayfish of Europe and Asia and western North America
        member:  #genus_Cambarus__Cambarus  a genus of Astacidae
           member:  #American_crayfish  common large crayfishes of eastern North America
     member:  #family_Paguridae__Paguridae  hermit crabs
        member:  #genus_Pagurus__Pagurus  type genus of the family Paguridae
           member:  #hermit_crab  small soft-bodied marine crustaceans living in cast-off shells of gastropods
     member:  #suborder_Natantia__Natantia  shrimp; prawns; etc.
        member:  #family_Crangonidae__Crangonidae  shrimps
           member:  #genus_Crangon__Crangon  type genus of the family Crangonidae
           member:  #shrimp  small slender-bodied chiefly marine decapod crustaceans with a long tail and single pair of pincers; many species are edible
        member:  #family_Palaemonidae__Palaemonidae  prawns
           member:  #genus_Palaemon__Palaemon  type genus of the family Palaemonidae; widely distributed genus
              member:  #prawn  shrimp-like decapod crustacean having two pairs of pincers; most are edible
              member:  #long-clawed_prawn__river_prawn__Palaemon_australis  large (a foot or more) edible freshwater prawn common in Australian rivers
        member:  #family_Peneidae__Peneidae  tropical prawns
           member:  #genus_Peneus__Peneus  type genus of the family Peneidae
              member:  #tropical_prawn  edible tropical and warm-water prawn
  member:  #order_Euphausiacea__Euphausiacea  small commonly luminescent crustaceans; important element of marine plankton: krill
     member:  #krill  shrimp-like planktonic crustaceans; major source of food for e.g. baleen whales
     member:  #Euphausia_pacifica  food for jellyfish
  member:  #order_Mysidacea__Mysidacea  opossum shrimp
     member:  #family_Mysidae__Mysidae  small shrimp-like crustaceans
        member:  #genus_Mysis__Mysis  type genus of the family Mysidae
           member:  #opossum_shrimp__opossumshrimp  shrimp-like crustaceans whose females carry eggs and young in a pouch between the legs
        member:  #genus_Praunus__Praunus  a genus of Mysidae
           member:  #opossum_shrimp__opossumshrimp  shrimp-like crustaceans whose females carry eggs and young in a pouch between the legs
  member:  #order_Isopoda__Isopoda  woodlice
     member:  #isopod  any of various small terrestrial or aquatic crustaceans with seven pairs of legs adapted for crawling
     member:  #family_Armadillidiidae__Armadillidiidae  pill bugs
        member:  #genus_Armadillidium__Armadillidium  type genus of the Armadillidiidae
           member:  #pill_bug  small terrestrial isopod with a convex segmented body that can roll up into a ball
     member:  #family_Oniscidae__Oniscidae  a family of Isopoda
        member:  #genus_Oniscus__Oniscus  type genus of the Oniscidae; woodlice that cannot roll into a ball
           member:  #sow_bug__sowbug  terrestrial isopod having an oval segmented body (a shape like a sow)
     member:  #family_Porcellionidae__Porcellionidae  sow bugs
        member:  #genus_Porcellio__Porcellio  Old World genus of isopod crustaceans
           member:  #sow_bug__sowbug  terrestrial isopod having an oval segmented body (a shape like a sow)
  member:  #order_Amphipoda__Amphipoda  small flat-bodied semi-terrestrial crustaceans: whale lice; sand-hoppers; skeleton shrimp
     member:  #amphipod  a kind of malacostracan crustacean
     member:  #family_Orchestiidae__Orchestiidae  beach fleas
        member:  #genus_Orchestia__Orchestia  type genus of the family Orchestiidae
           member:  #beach_flea__beachflea__sand_hopper__sand_flea  small amphipod crustaceans that hop like fleas; common on ocean beaches
     member:  #genus_Caprella__Caprella  skeleton shrimp
        member:  #skeleton_shrimp  small amphipod crustacean having a grotesque form suggestive of the praying mantis; found chiefly on seaweed
     member:  #genus_Cyamus__Cyamus  whale lice
        member:  #whale_louse__whalelouse  amphipod crustacean parasitic on cetaceans

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