Yellow crazy ant

There is also a different genus of ant called "crazy ants", Paratrechina.

The yellow crazy ant (Anoplolepis gracilipes) is a species of ant, introduced accidentally to northern Australia and Christmas Island in the Indian Ocean, that has caused ecological damage in both locations. It is colloquially called "crazy" because of its erratic movements when disturbed. Its long legs and antennae make it one of the largest invasive ant species in the world.