Yet another spider for my shirt design.
Myrmarachne is a genus of jumping spiders that mimic ants.
Like all spiders they only have two body segments, but their cephalothoraces has been modified to give the appearance of a distinct head and thorax. Since ants only have three legs, myrmarachnids wave hold their fourth, foremost pair out in front of them to imitate an ant's antennae.
On the bottom is the female Myrmarachne plataloides, which almost perfectly mimics a typical weaver ant.
On top is a male, which possesses a set of greatly enlarged chelicerae that it uses to spar with other males, and to create the illusion of a larger, soldier ant carrying a smaller worker (in many weaver ant colonies, soldiers will carry workers to new food sources).