Back جراد الماء العذب الهادئ Arabic Pacifastacus CEB Pacifastacus French Pacifastacus Italian Pacifastacus Dutch Pacifastacus NB Pacifastacus Polish Pacifastacus Russian Pacifastacus Swedish Pacifastacus WAR
| Pacifastacus | |
|---|---|
| |
| Pacifastacus leniusculus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| 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 six species, two of which are extinct:[1]
- †Pacifastacus chenoderma (fossil: Miocene – Pliocene)
- Pacifastacus connectens
- Pacifastacus fortis – Shasta crayfish
- Pacifastacus gambelii
- Pacifastacus leniusculus – signal crayfish
- †Pacifastacus nigrescens – Sooty crayfish
- ^ James W. Fetzner Jr. (January 14, 2008). "Genus Pacifastacus Bott, 1950". Crayfish Taxon Browser. Carnegie Museum of Natural History. Archived from the original on June 11, 2011. Retrieved May 26, 2010.