| Messor pergandei (Mayr, 1886) |
| Messor stoddardi (Emery, 1895) |
| Microbolbos Donisthorpe, 1948 |
| Moellerius Forel, 1893 |
| Monomorium Mayr, 1855 |
| Monomorium (Monomorium) Mayr, 1855 |
| Monomorium (Monomorium) minimum Buckley, 1867 |
| Monomorium (Monomorium) saxicola Buckley, 1867 |
| Monomorium (Xeromyrmex) Emery, 1915 |
| Monomorium (Xeromyrmex) subopacum Smith, 1858 |
| Monomorium (Xeromyrmex) subopacum var. intermedium Santschi, 1927 |
| Monomorium (Xeromyrmex) subopacum var. liberta Santschi, 1927 |
| Monomorium adoneum Santschi, 1936 |
| Monomorium angusticlava Donisthorpe, 1947 |
| Monomorium antiguensis (Fabricius, 1793) |
| Monomorium apuleii Santschi, 1927 |
| Monomorium atra (Buckley, 1866) |
| Monomorium cabrerae (Santschi, 1919) |
| Monomorium carbonarium (Smith, 1858) |
| Monomorium cinnabari Roger, 1863 |