Myrmecia borealis is an Australian ant which belongs to the Myrmecia genus. This species is native to Australia. Their distribution has only been recorded very few times in Queensland and New South Wales. The head and thorax of the Myrmecia borealis is black. The top of the legs are black as well, but the bottom areas are yellowish-brown. Mandibles are yellow and the middle part of the body is a reddish-brown colour.