| Forelius foetidus subsp. keiferi Wheeler, 1934 |
| Forelius keiferi Wheeler, 1934 |
| Forelius mccooki (McCook, 1880) |
| Forelius mccooki raza andrei Forel, 1912 |
| Forelius pruinosus (Roger, 1863) |
| Forelomyrmex Wheeler, 1913 |
| Formica Linnaeus, 1758 |
| Formica (Camponotus) Mayr, 1861 |
| Formica (Camponotus) esuriens Smith, 1858 |
| Formica (Camponotus) fulvacea Norton, 1868 |
| Formica (Polyergus) Latreille, 1804 |
| Formica (Polyergus) rufescens Latreille, 1798 |
| Formica abdominalis Fabricius, 1804 |
| Formica aliena Föerster, 1850 |
| Formica altipetens Wheeler, 1913 |
| Formica antiguensis Fabricius, 1793 |
| Formica aphidicola Walsh, 1863 |
| Formica apicalis Latreille, 1802 |
| Formica argentea Wheeler, 1912 |
| Formica atriceps Smith, 1858 |