Meat ants are a group of similar, well known and ecologically dominant ants in
the genus Iridomyrmex. Most are aggressive (I. lividus is often an exception) and are
pretty well known by most Australians, as they will invade the BBQ, the back
verandah, and you, if you happen to stand on their nest. Some species clear a large
area of ground and will have many entrance holes with tracks going off into various
directions surrounding the nest. As this species group is so ecologically dominant,
some ants via Batesian mimicry have come to resemble them. It is also thought that
some of these spiders may prey on the ant model they mimic using not only a
similar resemblance to keep them safe from predators but also to produce chemicals
the ants recognise allowing the spider into or very near to the nest.