Anetia thirza, the cloud-forest monarch, is a butterfly of the family Nymphalidae. It is found in Mexico and Central America (including El Salvador, Costa Rica and Panama).
The larvae possibly feed on Metastelma and Cynanchum species.
Subspecies Anetia thirza thirza (Mexico) Anetia thirza insignis (Salvin, 1869) (Costa Rica, Panama)