Key to Australian Genera of Myrmeciinae


 * Mandibles very long and thin. Petiole with two segments. In full face view eyes abutting or nearly abutting posterior margin of head (where mandibles attach to head) => Myrmecia


 * Mandibles broadly triangular. Petiole with a single segment. In full face view eyes roughly centered along lateral borders of head => Nothomyrmecia (There is a single species present: Nothomyrmecia macrops)