Page last updated Wed 05 Feb 2020


Use the links to navigate the hierarchy of invertebrate classification.

  Family Astacidae

Genus Pacifastacus

    Species P. gambelii -- North America.
    Species P. leniusculus -- North America.
    Species P. nigrescens -- North America.
    Species P. chenoderma
    Species P. connectens
    Species P. fortis

Taxon Information

The Genus Pacifastacus has been reported (or is assumed) to occur in fresh waters. This taxon has been reported from North America.

(These statements were generated automatically from the WInvertebrates database.)

Literature Records

  • Pacifastacus, [Nearctic; 8 species worldwide] (Crandall & Buhay, 2008).
  • Pacifastacus, lakes and rivers west of the Continental Divide, also upper Missouri River; 5 species, a few presumed extinct [North America] (Smith, 2001).
  • Pacifastacus, "along the Pacific slope from British Columbia to Calif." (Chace et al., 1959).


  • Crandall, K.A. & J.E. Buhay. 2008. Global diversity of crayfish (Astacidae, Cambaridae, and Parastacidae — Decapoda) . Hydrobiologia 595: 295-301. [Available online]
  • Smith, D.G. 2001. Decapoda (Crayfishes, shrimps). Pennak's Freshwater Invertebrates of the United States, 4th edition: 585-608.
  • Chace, F.A., jr., J.G. Mackin, L. Hubricht, A.H. Banner & H.H. Hobbs, jr. 1959. Malacostraca. [in] W.T. Edmondson (ed.). Ward & Whipple Fresh-Water Biology, 2nd edition: 869-901.

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