| Osmia (Nothosmia) Ashmead, 1899 |
| Osmia (Nothosmia) pumila Cresson, 1864 |
| Osmia (Nothosmia) titusi Cockerell, 1905 |
| Osmia (Osmia) Panzer, 1806 |
| Osmia (Osmia) ribifloris Cockerell, 1900 |
| Osmia (Osmia) ribifloris subsp. biedermannii Michener, 1936 |
| Osmia (Osmia) ribifloris subsp. ribifloris Cockerell, 1900 |
| Osmiini Newman, 1834 |
| Paranthidium Cockerell & Cockerell, 1901 |
| Paranthidium (Paranthidium) Cockerell & Cockerell, 1901 |
| Paranthidium (Paranthidium) gabbi Cresson, 1878 |
| Paranthidium (Paranthidium) jugatorium (Say, 1824) |
| Paranthidium (Paranthidium) jugatorium subsp. perpictum (Cockerell, 1898) |
| Paranthidium (Rapanthidium) Michener, 1948 |
| Paranthidium (Rapanthidium) vespoides (Friese, 1925) |
| Protosmia Ducke, 1900 |
| Protosmia (Chelostomopsis) Cockerell, 1925 |
| Protosmia (Chelostomopsis) rubifloris (Cockerell, 1898) |
| Stelis Swaine, 1799 |
| Stelis (Dolichostelis) Parker & Bohart, 1979 |