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Astacidae
The family Astacidae comprises the freshwater crayfish native to Europe and western North America. It is made up of three genera. ''Pacifastacus'' is found on the Pacific coast of the United States and British Columbia and includes the signal crayfish and the Shasta crayfish. The genera ''Astacus'' and ''Austropotamobius'' are both found throughout Europe and parts of western Asia. ==Species== The family Astacidae contains 12 species in three genera : *''Astacus'' * *''Astacus astacus'' — noble crayfish * *''Astacus leptodactylus'' — Danube crayfish * *''Astacus pachypus'' *''Austropotamobius'' * *''Austropotamobius italicus'' * *''Austropotamobius pallipes'' — white-clawed crayfish * *''Austropotamobius torrentium'' — stone crayfish *''Pacifastacus'' * *''Pacifastacus chenoderma'' * *''Pacifastacus connectens'' * *''Pacifastacus fortis'' — Shasta crayfish * *''Pacifastacus gambelii'' * *''Pacifastacus leniusculus'' — signal crayfish * *''Pacifastacus nigrescens''
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Astacidae」の詳細全文を読む
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