Hygrotus sayi
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Dytiscidae
- genus: Hygrotus
- species: Hygrotus sayi
Devon- Edmonton
- Lethbridge
- Medicine Hat
- Tofield
Alberta- Courtenay
British Columbia
Canada
Chicago- Evanston
- Evergreen Park
- Palos Park
Illinois- Marion
- Marion Center
- West Concord
Massachusetts- Olympia
Washington- Martinsburg
West Virginia
United States