Calathus gregarius
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Carabidae
- genus: Calathus
- species: Calathus gregarius
Cowansville
Quebec
Canada
Ames
Iowa- Saint Ignace
Michigan- Ithaca
- South Hill
New York
United States