Formica obscuriventris
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Hymenoptera
- family: Formicidae
- genus: Formica
- species: Formica obscuriventris
- Medicine Hat
Alberta
Canada- Boulder
- Redlands
- Westcliffe
Colorado- Port Barrington
- Waukegan
Illinois- Nashville
- Ogden Dunes
Indiana- Foxborough
- West Concord
Massachusetts- Holland
Ohio- Millvale
Pennsylvania- Front Royal
Virginia- Madison
Wisconsin
United States