Appearance
Colouration is usually plain dark brown, although mottling is occasionally seen, as is a saddle-shaped marking.Several subspecies of "C. bartonii" have been recognised, but it is unclear how advisable this is, and work is ongoing to determine patterns of infraspecific variation.
Naming
"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". The locality where his specimen was captured is not known, but is thought to be near Philadelphia, Pennsylvania.Status
"Cambarus bartonii" is included as a species of Least Concern on the IUCN Red List.References:
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