Phyllium is the largest and most widespread genus of leaf insects in the family 'Phylliidae ('Phasmatodea: Verophasmatodea'). They can be found in the Indian subcontinent through to Southeast Asia and Australasia.

They among the leaves of the oldest rainforest forest in the world. The adult imitates, almost perfectly, a leaf. As a matter of fact, the body is green, flat, foliar veins are visible and also the appendages of the legs have transformed simulating the margins of the leaf.

Presently, the giant leaf insect is not threatened with extinction. In nature, it is an abundant source of feeding for all the insectivorous animals present in the forest such as reptilians, birds and mammals.

More Info: en.wikipedia.org