Species: Pacifastacus gambelii

Pilose Crayfish
Species

    Pigmented, eyes normal; rostrum with margins converging, at least 3 pr lateral marginal spines, acumen indistinct, median carina present; postorbital ridges lacking posterior spines or tubercles; cervical and hepatic spines absent; areola broad with 7-9 punctations in narrowest part, branchiocardiac groove interrupted so that distinct cephalic and caudal portions of areola evident; chela stout, dorsal surface of palm studded with minute tubercles, two conspicuous longitudinal clusters of setae on dorsal surface of palm; male lacking hooks and bosses on all pereiopods; male 1st pleopod lacking terminal elements, in form of tightly rolled tube, only distalmost 3-5% slightly attenuate; incisor region of mandible blade-like (Hobbs, 1972; Bouchard 1977). [LENGTH: to 35 TCL, to 65 TL] [WIDTH: to 13]

    Kingdom
    Animalia
    Phylum
    Crustacea
    Class

    Malacostraca

    Order

    Decapoda

    Family

    Astacidae

    Genus

    Pacifastacus

    Classification
    Informal Taxonomy
    Animals, Invertebrates - Crustaceans - Crayfishes
    Formal Taxonomy
    Animalia - Crustacea - Malacostraca - Decapoda - Astacidae - Pacifastacus

    Pigmented, eyes normal; rostrum with margins converging, at least 3 pr lateral marginal spines, acumen indistinct, median carina present; postorbital ridges lacking posterior spines or tubercles; cervical and hepatic spines absent; areola broad with 7-9 punctations in narrowest part, branchiocardiac groove interrupted so that distinct cephalic and caudal portions of areola evident; chela stout, dorsal surface of palm studded with minute tubercles, two conspicuous longitudinal clusters of setae on dorsal surface of palm; male lacking hooks and bosses on all pereiopods; male 1st pleopod lacking terminal elements, in form of tightly rolled tube, only distalmost 3-5% slightly attenuate; incisor region of mandible blade-like (Hobbs, 1972; Bouchard 1977). [LENGTH: to 35 TCL, to 65 TL] [WIDTH: to 13]

    Short General Description
    a crayfish
    Habitat Type Description
    Freshwater
    Migration
    false - false - false - Home range probably does not exceed 50 m.
    Non-migrant
    false
    Locally Migrant
    false
    Food Comments
    No data; probably opportunistic.
    Reproduction Comments
    Data suggest spring breeding.
    NatureServe Global Status Rank
    G4G5
    Global Status Last Reviewed
    2009-07-01
    Global Status Last Changed
    1996-02-19
    Other Status

    Currently Stable - 1996-01-01

    Conservation Status Map
    <img src="http://www.natureserve.org/explorer/servlet/GetMapGif?US.CA=S4&US.ID=S4&US.MT=S1&US.NV=S2&US.OR=S2&US.UT=S2&US.WA=S3&US.WY=SNR" alt="Conservation Status Map" style="width: 475px; height: auto;" />
    Global Range
    G - 200,000-2,500,000 square km (about 80,000-1,000,000 square miles) - G - Pacific versant in Oregon, Washington, Idaho, Montana, Nevada, Wyoming and possibly northeast California. Missouri drainage in Montana and Wyoming and Utah. Only extant member of its genus east of the North American continental divide (Hobbs, 1989; Rogers, 2005).
    Global Range Code
    G
    Global Range Description
    200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
    ELEMENT_GLOBAL.2.109325