Pacifastacus leniusculus (Dana, 1852)
(Signal Crayfish)

Taxonomic hierarchy:
SpeciesPacifastacus leniusculus (Signal Crayfish)
FamilyASTACIDAE (crayfishes)
OrderDECAPODA (crabs, shrimps, lobsters etc.)
SuperorderEUCARIDA (crab, shrimps, lobsters etc.)
SubclassEUMALACOSTRACA (a subclass of crustaceans)
ClassMALACOSTRACA (crabs, lobsters, shrimps, prawns, woodlice etc.)
SubphylumCRUSTACEA (crustaceans)
PhylumARTHROPODA (arthropods)
SuperphylumECDYSOZOA (skin shedders)
CladeBilateria (bilaterally symmetrical animals)
SubkingdomEUMETAZOA (metazoans)
KingdomANIMALIA (animals)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Pacifastacus leniusculus (Signal Crayfish) :
1: Pacifastacus leniusculus (Signal Crayfish)
29 Oct 2002 OSGR: SU49 51° 40’ N, 1° 20’ W Vice County: Berks (VC 22) England
Dead animal with tail missing
Image 1: Rostrum and face - side viewImage 2: Side view - close-upImage 3: Top view - close-upImage 4: Underside view - close-upImage 5: Claws - top view - enlargedImage 6: Claws - underside - enlargedImage 7: Rostrum and face - side view - enlargedImage 8: Rostrum  - enlargedImage 9: Side view - enlarged

Identification Works

AuthorYearTitleSource
Booy, O., Wade, M. & White, V. Signal Crayfish

Pacifastacus leniusculus (Signal Crayfish) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Pacifastacus leniusculus (Signal Crayfish)
BioInfoBioInfo (www.bioinfo.org.uk) has 1 host/parasite/foodplant and/or other relationships for Pacifastacus leniusculus (Signal Crayfish)
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