Fallicambarus tenuis

{{Short description|Species of crayfish}}

{{Speciesbox

| status = DD

| status_system = IUCN3.1

| status_ref = {{Cite iucn | author = K. A. Crandall | title = Fallicambarus tenuis | volume = 2016 | page = e.T154001A96470410 | date = 2016 | doi = 10.2305/IUCN.UK.2016-1.RLTS.T154001A96470410.en | access-date = 9 January 2018}}

| taxon = Fallicambarus tenuis

| authority = Hobbs, 1950

| synonyms = Procambarus tenuis Hobbs, 1950

}}

Fallicambarus tenuis is a species of crayfish in the genus Fallicambarus in the family Cambaridae. It was the only species in the subgenus Procambarus (Tenuicambarus) before DNA analysis suggested a reclassification.{{Cite journal | author = Benjamin J. Ainscough, Jesse W. Breinholt, Henry W. Robison, Keith A. Crandall | title = Molecular phylogenetics of the burrowing crayfish genus Fallicambarus (Decapoda: Cambaridae) | journal=Zoologica Scripta | year = 2013 | volume = 42 | issue = 3 | pages = 306–316 | doi = 10.1111/zsc.12006| s2cid = 83745752 }}

Fallicambarus tenuis is rare throughout its range, which is restricted to the Ouachita Mountains of Le Flore County, Oklahoma and Polk County, Arkansas.{{cite web |url=http://www.wildlifearkansas.com/materials/ProjectReports/T2-1-7%20Ouachita%20Procambarus%20Study%20final.pdf |author=Henry W. Robison |author2=Keith A. Crandall|author-link2=Keith A. Crandall |name-list-style=amp |date=August 31, 2005 |title=Status and genetics of three Ouachita crayfishes of the genus Procambarus |publisher=Arkansas Game and Fish Commission |access-date=October 3, 2010}}