Cytilus alternatus
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Byrrhidae
- genus: Cytilus
- species: Cytilus alternatus
- Norman Wells
Northwest Territories- Tobermory
Ontario
Canada- Gaithersburg
Maryland- Northampton
- Paxton
- West Concord
Massachusetts
United States