Paratrechina

also known as Black Crazy Ants. Its common name arises from its characteristic erratic and rapid movement, and habit of not following trails as often as other ants. However, while the term crazy ant is officially identified with this species, there are other closely related ant species that are also called crazy ants. At least one authority has suggested that Paratrechina longicornis receive the common name longhorned crazy ant to prevent it being confused with other species referred to as crazy ant.