Worker ant (Notoncus sp.) passes by a herd of aphids it's patrolling for nectar. Kyogle, NSW.
Ant waits patiently for this armoured bug to excrete some delicious nectar wee. The ant's right antenna is touching the triangular shaped protrusion where the nectar is excreted. Let's call this the tail end. Oxley Creek, QLD.
Green ant (Rhyditoponera metallica) likes aphid wee. Mt Coot-tha, Qld.