Myrmarachne melanotarsa, the dark-footed ant-spider, is an African jumping spider found around Lake Victoria in Africa.

Like other spiders in the genus Myrmarachne, these spiders mimic ants, in this case, ants of the genus Crematogaster.

[2] Some predators (including larger jumping spiders) eat jumping spiders but are averse to attacking ants, as ants aggressively defend themselves.

M. melanotarsa takes advantage of this aversion by mimicking the ants.

Spiders of the genera Menemerus and Pseudicius have been shown to flee, leaving their eggs behind, when in the presence of groups of M. melanotarsa.