Signalkräfta
Pacifastacus leniusculus
#nm_0621📍 Sweden
- Language
- Swedish
- Transliteration
- Signalkrafta
- IPA
- /sɪŋˈnɑːlˌkrɛfta/
Compound: signal + kräfta signal: signal, for the pale patch at the hinge of the claw, kräfta: crayfish ↳ kräfta from Old Swedish krævet (crayfish) ↳ From Old Saxon krevit (crayfish) ↳ From Proto-West Germanic *krabit (crayfish)
Freshwater crayfish typically 6-9 cm long, reaching 16-20 cm. Smooth carapace, brown to reddish above, with a distinctive white to pale blue-green patch at the hinge of each claw. Native to the Columbia River basin of western North America. Introduced to Europe from 1960 and established in 27 countries by 2009. A largely resistant carrier of crayfish plague (Aphanomyces astaci), which is fatal to European crayfish.