English: Sri Lankan Blue Oak leaf
Binomial: Kallima philarchus
Sri Lankan Blue Oak leaf is an endemic species of butterflies found in Sri Lanka. They normally rest on trunks of trees pointing the head downwards. When it fold the wings together, its body shape and the color resemble a dried leaf which can mislead predators. The upper side of the wings is blue in color that is only visible if the wings are opened. Host plants of this butterfly belong to Acanthaceae family and above photograph was taken at Sinharaja.
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