 They are distributed nationwide, and the species was first described by John S. Clark in 1951.The average size of a typical worker ant is 9.5-11 millimetres, making the "Myrmecia dispar" among the smallest species of bull ant.The head and gaster are of a chocolate brown colour, thorax, node, and the legs are reddish-brown, and the mandibles and tarsi are a reddish-yellow colour.