The Giant Owl (Caligo memnon) is a butterfly of the Nymphalidae family. It is also known as the Pale Owl butterfly. The species can be found in the rainforests and secondary forests of Mexico down to the Amazon rainforest. The wingspan is usually from 115 to 130 mm, but can reach 150 mm. The larvae feed on Musa and Heliconia species and can be a pest for banana cultivation. Adults feed on juices of rotting fruit.