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In the United Kingdom and Ireland, the terms crayfish or crawfish commonly refer to the European spiny lobster, a saltwater species found in much of the East Atlantic and Mediterranean. [33] The only true crayfish species native to the British Isles is the endangered white clawed crayfish .
The genus Cambarus is the second largest freshwater crayfish genus inhabiting the Northern Hemisphere, with only sixty fewer species than the genus Procambarus. [2] Though Cambarus are varied across species, the two terminal elements that make up the male form I gonopod form ninety degree angles with the central appendage, allowing for their identification.
Procambarus is a genus of crayfish in the family Cambaridae, all native to North and Central America. It includes a number of troglobitic species, and the marbled crayfish (marmorkrebs), which is parthenogenetic. Originally described as a subgenus for four species, it now contains around 161 species.
It is an introduced species in adjacent regions, including Massachusetts, Vermont, and Ontario in Canada. [1] It is known commonly as the Allegheny crayfish [ 2 ] and the obscure crayfish . This species lives in slow-moving waterways and pools with rocky substrates, where it hides beneath rocks. [ 1 ]
The Cambaridae are the largest of the four families of freshwater crayfish, with over 400 species. [1] Most of the species in the family are native to the United States east of the Great Divide and Mexico, but fewer range north to Canada, and south to Guatemala and Honduras. Three live on the island of Cuba.
Cambarus bartonii is a species of crayfish native to eastern North America, where it is called the common crayfish [3] or Appalachian brook crayfish. [2]Cambarus bartonii was the first crayfish to be described from North America, when Johan Christian Fabricius published it under the name Astacus bartonii in his 1798 work Supplementum entomologiae systematicae. [4]
Cambarus robustus, known generally as the robust crayfish or Big Water crayfish, [2] is a species of crayfish in the family Cambaridae. It is found in North America. [3] [4] [1] [5] The IUCN conservation status of Cambarus robustus is "LC", least concern, with no immediate threat to the species' survival. The population is stable.
Faxonius propinquus, the Northern clearwater crayfish, is a species of crayfish in the family Cambaridae found in Ontario, Quebec and the Northeastern and Midwestern United States. [ 3 ] [ 2 ] References