The Forest Giant Owl (Caligo eurilochus) is an OWL BUTTERFLY (ranging from MEXICO, through CENTRAL AMERICA, to the AMAZON RIVER basin in SOUTH AMERICA. The Forest Giant Owl can reach a wingspan of 10-13.5 cm. The upper side of the wings is beige, black – and iridescent blue in males. The underside is finely contrasted with brown, black and creamy white. Most spectacular is a giant eyespot on each hind wing accompanied by some smaller ones. The fine pattern can serve as camouflage if the animal sits quietly on a tree trunk but the large eyespots can frighten a vertebrate enemy if displayed.
The Owl Butterflies are the largest butterflies in the BG