| Eciton carolinense Emery, 1894 |
| Eciton clavicornis Norton, 1868 |
| Eciton cloosae Forel, 1912 |
| Eciton coecum (Latreille, 1802) |
| Eciton coecum raza kulowi Forel, 1901 |
| Eciton coecum var. biloba Emery, 1901 |
| Eciton colombi Santschi, 1921 |
| Eciton crassicornis Smith, 1855 |
| Eciton crassicornis subsp. crudele Santschi, 1929 |
| Eciton crassicornis var. indomabile Santschi, 1930 |
| Eciton crassicornis var. intrepidum Santschi, 1929 |
| Eciton curvidentata (Latreille, 1802) |
| Eciton diabolus Forel, 1912 |
| Eciton erratica Smith, 1860 |
| Eciton esenbecki (Westwood, 1842) |
| Eciton esenbecki st. hirsutipodex Santschi, 1920 |
| Eciton esenbecki subsp. wilsoni Santschi, 1920 |
| Eciton frontalis Menozzi, 1924 |
| Eciton funesta Santschi, 1921 |
| Eciton fuscipennis Smith, 1942 |