Idaea              Geometridae, Sterrhinae
Idia               Noctuidae, Herminiinae
Infurcitinea       Tineidae
Inurois            Geometridae, Oenochrominae
Ipimorpha          Noctuidae, Amphipyrinae
Isia               Arctiidae
Isochorista        Tortricidae, Tortricinae, Epitymbiini
Isophrictis        Gelechiidae, Anomologinae
Isopolia           Noctuidae, Cuculliinae
Isotrias           Tortricidae, Tortricinae, Polyorthini
Itame              Geometridae, Ennominae