Pontastacus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Eucarida
Ordo: Decapoda
Subordo: Pleocyemata
Infraordo: Astacidea
Superfamilia: Astacoidea

Familia: Astacidae
Genus: Pontastacus
Species: Pontastacus leptodactylus

Pontastacus is a genus of freshwater crayfish occurring in eastern Europe and western Asia.
Classification and phylogeny

Pontastacus belongs to the family Astacidae, one of the three families of Northern Hemisphere freshwater crayfish within the superfamily Astacoidea. The internal phylogeny of Astacidae can be shown in the cladogram below:[1]

Astacidae	Pacifastacus Astacus Pontastacus Austropotamobius

Species

Nine species are recognized:[1]

Pontastacus cubanicus (Birstein & Vinogradov, 1934) - Black Sea, Russia
Pontastacus danubialis Brodsky, 1981 - Danube Delta lakes, Ukraine
Pontastacus daucinus Brodsky, 1981 - Danube Delta lakes, Ukraine and Moldova
Pontastacus eichwaldi (Bott, 1950) - Caspian Sea
Pontastacus kessleri (Schimkewitsch, 1886) - Turkestan
Pontastacus leptodactylus (Eschscholtz, 1823) - around the Black Sea, in Crimea, Russia, and Turkey - "Turkish crayfish"
Pontastacus pachypus (Rathke, 1837) - Caspian Sea, Black Sea, Sea of Azov - "Caspian crayfish"
Pontastacus pylzowi (Skorikov, 1907) - eastern part of Transcaucasia
Pontastacus salinus (von Nordmann, 1842) - Black Sea

References

Crandall, Keith A.; De Grave, Sammy (2017). "An updated classification of the freshwater crayfishes (Decapoda: Astacidea) of the world, with a complete species list". Journal of Crustacean Biology. 37 (5): 615–653. doi:10.1093/jcbiol/rux070.