Dusky arion
- kingdom: Animalia
- phylum: Mollusca
- class: Gastropoda
- order: Stylommatophora
- family: Arionidae
- genus: Arion
- species: Arion subfuscus
- Austria
Wrangell
Alaska- Newark
Delaware- Barrington Hills
Illinois- Blowing Rock
North Carolina
United States
Bernstein
Dartmouth