Kallima philarchus, the Ceylon blue oakleaf, is a nymphalid butterfly found in Sri Lanka. With wings closed, it closely resembles a dry leaf with dark veins and is a spectacular example of camouflage.
The Sri Lankan Blue Oak Leaf only feeds on overripe fruits and tree sap. Males perch on foliage in an opening at a stream to search for mates. This is a migrant species.
This is an iconic butterfly in gloomy wet zone forests, only coming out in openings within forests. Its distribution extends to the intermediate zone and occasionally to dry zone forests along shady streams.