The Asian Weaver Ant (Oecophylla smaragdina) is a species of arboreal ant found in tropical Asia and Australia. 
These ants form colonies with multiple nests in trees, each nest being made of leaves stitched together using the silk produced by the ant. 
Workers and major workers are mostly coloured orange. 
Workers are 5–7 mm long; they look after larvae and farm scale bugs for honeydew. 
Major workers are 8–10 mm long, with long strong legs and large mandibles. 
They forage, assemble and expand the nest. 
Queens are typically 20–25 mm long, and normally greenish-brown, giving the species its name smaragdina (emerald or green).

These Asian Weaver Ants were trying to overpower this hoverfly at the edge of our lodge's swimming pool.

Ben Tre area, Mekong Delta, Vietnam, 24 December 2023