Morpho achilles   Achilles Morpho
Photo: Luis Torres

Morphos include some of the largest butterflies in the American tropics. This species is found from Colombia to Paraguay. It is a butterfly of forest canopies, forest clearings, and stream edges. The cryptic underside makesMorphos almost invisible when they are at rest; contrasting with the striking appearance of the upper wing surface. The sap of wounded trees and vines are a favourite of these butterflies.