| Hypsoropha adeona Druce, 1889 |
| Ianius Richards, 1939 |
| Ianius mosca (Dyar, 1910) |
| Ichoria Butler, 1876 |
| Ichoria chalcomedusa Druce, 1893 |
| Ichoria mexicana Draudt, 1931 |
| Idalus Walker, 1855 |
| Idalus agricus Dyar, 1910 |
| Idalus crinis Druce, 1884 |
| Idalus herois Schaus, 1899 |
| Idalus lineosus Walker, 1869 |
| Idalus vitrea (Cramer, 1780) |
| Idia Hübner, 1813 |
| Idia oaxacalis (Schaus, 1916) |
| Illice Walker, 1859 |
| Illice unifasciata Grotey Robinson, 1868 |
| Inopsis Felder, 1874 |
| Inopsis catoxantha Felder, 1874 |
| Inopsis modulata (Edwards, 1884) |
| Isanthrene Hübner, 1819 [1816] |