Illioneus Giant Owl Butterfly

Caligo illioneus has a wingspan reaching about 12–15 centimeters (4.7–5.9 in). In this large owl butterfly the dorsal sides of the wings vary from light brilliant blue to purplish with dark brown edges, while the undersides have a highly cryptic dull brown color, with huge, yellow-rimmed eyespots resembling to the eyes of an owl.