Ithomisa is a genus of moths in the family Saturniidae first described by Charles Oberthür in 1881.

Species Ithomisa catherina (Schaus, 1896) Ithomisa kinkelini Ch. Oberthuer, 1881 Ithomisa lepta (Druce, 1890) Ithomisa umbrata Oiticica Filho, 1958

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