Large nest approximately 30cm high, built mainly from the needles of sheoak leaves. These ants were very busy and very fast. I was unable to focus on just one ant.
Body length about 8-10 mm
These were nesting in an Acacia mearnsii stag which I cut for firewood. They fell out of a split round.
Photo 2 and 3 shows an adult trying to wrestle a pupa to safety out of the rubble on my chopping block.