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Pacifastacus leniusculus1.jpg
Pacifastacus leniusculus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Astacidea
Family: Astacidae
Genus: Pacifastacus
Bott, 1950
Type species
Astacus Klamathensis
Stimpson, 1857

Pacifastacus is a genus of crayfish native to western North America (USA and Canada), containing the following six species (DD = Data Deficient; CR = Critically Endangered; LC = Least Concern; EX = Extinct):[1][2]


  1. ^ James W. Fetzner, Jr. (January 14, 2008). "Genus Pacifastacus Bott, 1950". Crayfish Taxon Browser. Carnegie Museum of Natural History. Retrieved May 26, 2010. 
  2. ^ "Search". IUCN Red List. International Union for Conservation of Nature. Retrieved October 9, 2010.