Oecophylla smaragdina, more commonly known as kerengga or red weaver ants, is a species of arboreal ant found in tropical Asian countries and Australia. These ants form colonies with multiple nests among the foliage of trees. Colonies can be extremely large consisting of more than a hundred nests extending over numerous trees and containing more than half a million workers. Each nest is made of leaves stitched together using the silk secreted by the ant larvae. Nests are built during the night, with major workers weaving towards the exterior and minor workers completing the interior structure. This species is highly territorial and workers aggressively defend their territories against intruders. They prey on insects that are harmful to their host trees. Despite the fact that this species lacks a functional sting but it can inflict painful bites. It is widely distributed in tropical Asia and Australia.