Kallima inachus, the orange oakleaf, Indian oakleaf or dead leaf, is a nymphalid butterfly found in Tropical Asia from India to Japan. With wings closed, it closely resembles a dry leaf with dark veins and is a commonly cited example of camouflage.
The Orange Oakleaf (Kallima inachus), also known as the dead leaf butterfly, is an extraordinary nymphalid butterfly native to Tropical Asia. It is world-renowned as one of the most perfect examples of masquerade camouflage in the animal kingdom, completely transforming its appearance based on whether its wings are open or closed.
Key Biological Facts
• Habitat: Dense, moist tropical forests, foothills, and stream beds across Asia (from India and Pakistan to Southern China, Taiwan, and Japan).
• Behavioral Defense: When threatened, it drops to the forest floor or settles into a bush, instantly snapping its wings shut. It sways slightly in the wind to mimic a loose falling leaf.
• Diet: Adult butterflies rarely feed on flower nectar. Instead, they prefer rotting fruit, sap from tree trunks, and animal dung.
• Seasonal Forms: They exhibit polyphenism, meaning they look different depending on the season. The dry-season form is larger and boasts the most flawless, hyper-detailed dead-leaf camouflage, while the wet-season form is smaller and often features darker ventral patterns with more pronounced eye-spots.
