Pete Oxford / Forest Giant-Owl (Caligo eurilochus) butterfly newly emerged from chrysalis, Mindo Cloud Forest, Ecuador

Sean Crane / Forest Giant-Owl (Caligo eurilochus) butterfly wing with false eye spot, Ecuador

Pete Oxford / Giant Owl Butterfly Caterpillar (Caligo memnon) with eggs laid on neck area by parasitic wasp. Yasuni National Park, Amazon Rainforest, Ecuador, South America.

Mark Moffett / Forest Giant-Owl (Caligo eurilochus) butterfly pupa in chrysalis, South America

Albert Lleal / Illioneus Giant Owl (Caligo illioneus) on fallen log in forest, Venezuela

Piotr Naskrecki / Forest Giant-Owl (Caligo eurilochus) butterfly chrysalis, Costa Rica

Piotr Naskrecki / Forest Giant-Owl (Caligo eurilochus) butterfly showing false eye spots, Costa Rica

Michael & Patricia Fogden / Forest Giant-Owl (Caligo eurilochus) butterfly flying in the rainforest, Costa Rica

Konrad Wothe / Forest Giant-Owl (Caligo eurilochus) butterfly wing showing eye-mark, Germany

Norbert Wu / Forest Giant-Owl (Caligo eurilochus) butterfly close-up of false eye spot on wing, Costa Rica

Pete Oxford / Forest Giant-Owl (Caligo eurilochus) butterfly chrysalis, Mindo Cloud Forest, Ecuador

Karine Aigner / Giant owl butterfly (Caligo eurilochus) left, and a Blue Morpho butterfly far right, emerge from their Chrysalis at the Mindo butterfly Farm (Mariposas de Mindo) Mindo, Ecuador.

Karine Aigner / A giant Owl butterfly (Caligo eurilochus) emerges from it's Chrysalis at the Mindo butterfly Farm (Mariposas de Mindo) Mindo, Ecuador.

Karine Aigner / Giant owl butterfly (Caligo eurilochus) emerges from it's Chrysalis at the Mindo butterfly Farm (Mariposas de Mindo) Mindo, Ecuador.

Karine Aigner / Portrait of a smiling teenager with a giant Owl butterfly (Caligo eurilochus) on her nose. Mindo, Ecuador. Model released.

Maxime Aliaga / Forest giant owl butterfly (Caligo eurilochus) showing eye spots, Serere Private Reserve, Bolivia

Robert Pickett / Owl Butterfly (Caligo eurilochus) eggs on Banana leaf food plant, Iquitos, Peru