Osmia cornifrons
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Hymenoptera
- family: Megachilidae
- genus: Osmia
- species: Osmia cornifrons
Windham
Connecticut- Glen Ellyn
- Wheaton
Illinois- Knoxville
Iowa- Adelphi
- Baltimore
- Beltsville
- Bladensburg
- Cabin John
- Calverton
- Cheverly
- Chevy Chase
- Chevy Chase Village
- Chillum
- College Park
- Colmar Manor
- Cottage City
- Dunkirk
- Dunkirk Town Center
- Edmonston
- Fort Washington
- Four Corners
- Friendship Village
- Gaithersburg
- Havre de Grace
- Hillandale
- Hyattsville
- Kensington
- Landover
- Landover Hills
- Langley Park
- Linganore
- Mount Airy
- Point of Rocks
- Riverdale Park
- Riverside
- Silver Spring
- Somerset
- South Kensington
- South Laurel
- Takoma Park
- Towson
- University Park
- Woodlawn
Maryland- Clementon
- East Brunswick
- South River
- Wanaque
New Jersey- Fairview
- Wood Village
Oregon- Shannondale
- West Liberty
West Virginia
United States