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| Osmia aliciae Ayala & Griswold, 2005 | 0 |
| Osmia atriventris Cresson, 1864 | 6 |
| Osmia azteca Cresson, 1878 | 0 |
| Osmia botitena Cockerell, 1909 | 0 |
| Osmia calaminthae Rightmyer, Ascher & Griswold, 2011 | 0 |
| Osmia californica Cresson, 1864 | 0 |
| Osmia calla Cockerell, 1897 | 0 |
| Osmia cara Cockerell, 1910 | 0 |
| Osmia chalybea Smith, 1853 | 3 |
| Osmia claremontensis Michener, 1936 | 0 |
| Osmia clarescens Cockerell, 1911 | 0 |
| Osmia cobaltina Cresson, 1878 | 0 |
| Osmia collinsiae Robertson, 1905 | 0 |
| Osmia coloradensis Cresson, 1878 | 0 |
| Osmia conjuncta Cresson, 1864 | 10 |
| Osmia conjunctoides Robertson, 1893 | 0 |
| Osmia cordata Robertson, 1902 | 0 |
| Osmia costaricensis Friese, 1925 | 0 |
| Osmia crassa Rust & Cresson, 1864 | 0 |
| Osmia dakotensis Michener, 1937 | 0 |
| Osmia densa Cresson, 1864 | 0 |
| Osmia erythrotricha Cockerell, 1912 | 0 |
| Osmia foxi Cameron, 1901 | 0 |
| Osmia gabrielis Cockerell, 1910 | 0 |
| Osmia gaudiosa Cockerell, 1907 | 0 |
| Osmia georgica Cresson, 1878 | 12 |
| Osmia grinnelli Cockerell, 1910 | 0 |
| Osmia illinoensis Robertson, 1897 | 2 |
| Osmia inspergens Lovell & Cockerell, 1907 | 0 |
| Osmia integra Cresson, 1878 | 0 |
| Osmia laeta Sandhouse, 1924 | 0 |
| Osmia latisulcata Michener, 1936 | 0 |
| Osmia lignaria Say, 1837 | 3 |
| Osmia lignaria lignaria Say, 1837 | 0 |
| Osmia lignaria propinqua Cresson, 1864 | 0 |
| Osmia liogastra Cockerell, 1933 | 0 |
| Osmia lupinicola Cockerell, 1937 | 0 |
| Osmia marginata Michener, 1936 | 0 |
| Osmia marginipennis Cresson, 1878 | 0 |
| Osmia nemoris Sandhouse, 1924 | 0 |
| Osmia neocyanopoda Rust & Bohart, 1986 | 0 |
| Osmia nigrobarbata Cockerell, 1916 | 0 |
| Osmia obliqua White, 1952 | 0 |
| Osmia odontogaster Cockerell, 1897 | 0 |
| Osmia palmula Rightmyer & Griswold, 2010 | 0 |
| Osmia pumila Cresson, 1864 | 5 |
| Osmia raritatis Michener, 1957 | 0 |
| Osmia regulina Cockerell, 1911 | 0 |
| Osmia ribifloris Cockerell, 1900 | 0 |
| Osmia ribifloris biedermannii Michener, 1936 | 0 |
| Osmia ribifloris ribifloris Cockerell, 1900 | 0 |
| Osmia sandhouseae Mitchell, 1924 | 1 |
| Osmia stangei Genaro, 2001 | 0 |
| Osmia subfasciata subfasciata Cresson, 1872 | 0 |
| Osmia texana Cresson, 1872 | 5 |
| Osmia titusi Cockerell, 1905 | 0 |
| Osmia vandykei Sandhouse, 1924 | 0 |
| Osmia versicolor Latreille, 1811 | 0 |
| Osmia visenda Sandhouse, 1924 | 0 |
| 47 |