Dome-backed spiny ants such as Polyrhachis australis (length 4-6 mm), nest amongst the foliage of trees and shrubs by webbing leaves together with silk produced by the larvae. They incorporate fragments of vegetation into the silk. This group of spiny ants have a strongly arched mesosoma which has very short spines or none at all. Most species inhabit rainforest edges, open forest and woodland and some are common in suburban gardens in coastal Queensland.
