Twig ants, or “elongated twig ants,” generally have large, prominent eyes that are oval-shaped. Because they are elongated, they can appear to look more like wasps than other species of ants do. They are also commonly called the "Mexican twig ant."Twig ants mainly feed on live insects, especially butterflies, moths, aphids and sometimes even fungus spores. These ants move in quick, short dashes and will dart around branches when they are disturbed. Twig ants are not really that aggressive, even when disturbed.