| Ichneumon lenis (Cresson, 1868) |
| Ichneumon lunator Michener, 1939 |
| Ichneumon luteus Christ, 1791 |
| Ichneumon luteus subsp. americanus Christ, 1791 |
| Ichneumon macrurus Dalla Torre, 1901 |
| Ichneumon morio Viereck, 1906 |
| Ichneumon munerosus (Cameron, 1885) |
| Ichneumon neutralis Cresson, 1877 |
| Ichneumon niger Goeze, 1780 |
| Ichneumon odiosus Cresson, 1877 |
| Ichneumon panamensis (Cameron, 1885) |
| Ichneumon pectoratorius Thunberg, 1822 |
| Ichneumon pennator Fabricius, 1793 |
| Ichneumon placitus Cresson, 1874 |
| Ichneumon pollux Cameron, 1884 |
| Ichneumon polyturator Drury, 1773 |
| Ichneumon propitius Cresson, 1872 |
| Ichneumon pterelas Cameron, 1884 |
| Ichneumon pulcher Brullé, 1846 |
| Ichneumon pullatus Cresson, 1864 |