Dismorphia thermesia, the pretty mimic white, is a butterfly in the family Pieridae. It is found in Guyana, Brazil, Ecuador, Peru, and western Bolivia. The habitat consists of transitional rainforests and cloudforests. The wingspan is about Adult males have a prominent black bar on the upperside of the forewings, extending from the basal area to the end of the discal cell. Females lack this bar and have more rounded wings. References Dismorphiinae Pieridae of South America Lepidoptera of Brazil Lepidoptera of Ecuador Fauna of the Amazon Butterflies described in 1819 Taxa named by Jean-Baptiste Godart