''Faxonius quadruncus'', the St. Francis River crayfish, is a species of

crayfish Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mu ...

in the family Cambaridae. It is endemic to Missouri. The

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrast ...

refers to the

St. Francis River The St. Francis River is a tributary of the Mississippi River, about long, in southeastern Missouri and northeastern Arkansas in the United States. The river drains a mostly rural area and forms part of the Missouri-Arkansas state line along the ...

where the first examples were found.

References

External links

Cambaridae Fauna of the United States Endemic fauna of Missouri Freshwater crustaceans of North America Crustaceans described in 1933 Taxobox binomials not recognized by IUCN {{crayfish-stub