Asian Weaver Ant

Appearance

Workers and major workers are mostly coloured orange. Workers are 5–6 millimetres (0.20–0.24 in) long; they look after larvae and farm scale bugs for honeydew. Major workers are 8–10 millimetres (0.3–0.4 in) long, with long strong legs and large mandibles. They forage, assemble and expand the nest. Queens are typically 20–25 millimetres (0.8–1.0 in) long, and normally greenish-brown, giving the species its name smaragdina (Latin: emerald).

Distribution

Oecophylla smaragdina has a widespread distribution in tropical Asia and Australia, its range extending from India through Indonesia and the Philippines to Northern Territory and Queensland in Australia. It is an arboreal species, making its nests among the foliage of trees. Nests are constructed during the night, with major workers weaving towards the exterior and minor workers completing the interior structure. The ant colony may have several nests in one tree, or the nests may be spread over several adjacent trees; colonies can reach up to half a million individuals. In one instance, a colony occupied 151 nests distributed among twelve trees. Each colony has a single queen, in one of these nests, and her progeny are carried to other nests of the colony. The average life of a mature colony may be eight years.