#family_Astacidae__Astacidae__Astacura  crayfish
  supertype:  arthropod_family__arthropodfamily  any of the arthropods
  member of:  Decapoda
  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

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