[2] Myrmecia vindex's are around 21 millimetres long on average, and they have normally have a red head, and a black abdomen.

Their mandibles are long, strongly toothed, and appears in a yellow palish colour.

[4] The nocturnal M. vindex relies exclusively on vision for navigation with eyes having ultraviolet-, blue- and a green-sensitive photoreceptor cells.

[5] Compared to other species within the genus Myrmecia, M. vindex are socially less evolved and typically have small populations.

During the height of their breeding season, Myrmecia vindex commonly pile discarded cocoons and shed exoskeletons on the crater of their nest, near the entrance.