Pterotosoma castanea

 Pterotosoma castanea is a species of moth of the family Uraniidae. It is found in the north-eastern Himalaya, Taiwan and Borneo.

Subspecies

 * Pterotosoma castanea castanea (north-eastern Himalaya, Taiwan)
 * Pterotosoma castanea kinabalua (Holloway, 1976) (Borneo)