The Myrmecia varians is one of the most distributed ants in the country, with the species being observed in every single state and territory except for Tasmania.

[1] The Myrmecia varians is a smaller species of bull ant.

The workers for the average worker is around 11–12.5 millimetres in length and queens grow up to 15-16 millimetres in length.

The head, thorax, and gaster are black; mandibles and basal, and half of scapes are a yellowish-brown, and the apex and teeth are more reddish.

Legs are yellowish-red; node and postpetiole is also red.