Oecophylla smaragdina, the green tree ant of northern Australia. Cape York Peninsula, Queensland, Australia

Friend or Foe? Oecophylla longinoda workers encounter each other on a tree branch and take a quick sniff of the other's scent. St. Lucia, KZN, South Africa

Nestmate transport in Oecophylla longinoda weaver ants: a major gives a lift to a minor worker. This form of transport is thought to be more energy efficient than if both ants were to walk individually. St. Lucia, KZN, South Africa