| Osorius cordovensis Bernhauer, 1910 |
| Osorius crassus Sharp, 1887 |
| Osorius cylindricus Latreille, 1832 |
| Osorius fauveli Cameron, 1913 |
| Osorius fumator Fauvel, 1889 |
| Osorius germanus Sharp, 1887 |
| Osorius intermedius Erichson, 1840 |
| Osorius mexicanus Bernhauer, 1910 |
| Osorius morio Notman, 1925 |
| Osorius mundus Sharp, 1876 |
| Osorius opacifrons Sharp, 1887 |
| Osorius parcus Sharp, 1887 |
| Osorius planifrons LeConte, 1877 |
| Osorius puncticeps Sharp, 1887 |
| Osorius rugipennis Bernhauer, 1910 |
| Osorius salvini Sharp, 1887 |
| Ouloglene Notman, 1925 |
| Ouloglene barberi Notman, 1925 |
| Oxarthrius Reitter, 1883 |
| Oxarthrius hamaticollis (Sharp, 1887) |