| Lasius americanus Emery, 1893 |
| Lasius aphidicola (Walsh, 1863) |
| Lasius arizonicus Wheeler, 1917 |
| Lasius belgarum (Bondroit, 1918) |
| Lasius californicus Wheeler, 1917 |
| Lasius escamole Reza, 1925 |
| Lasius exacutus Ruzsky, 1902 |
| Lasius humilis Wheeler, 1917 |
| Lasius interjectus Mayr, 1866 |
| Lasius interjectus subsp. arizonicus Wheeler, 1917 |
| Lasius interjectus subsp. californicus Wheeler, 1917 |
| Lasius interjectus subsp. mexicanus Wheeler, 1914 |
| Lasius latipes (Walsh, 1863) |
| Lasius mexicanus Wheeler, 1914 |
| Lasius niger (Linnaeus, 1758) |
| Lasius niger var. americanus Emery, 1893 |
| Lasius nigerrima (Christ, 1791) |
| Lasius occidentalis Wheeler, 1909 |
| Lasius pallitarsis (Provancher, 1881) |
| Lasius silvestrii Wheeler, 1928 |