The Southern fire ant, Solenopsis xyloni, is a stinging fire ant native to southern parts of the United States. Its behavior is similar to the red imported fire ant (S. invicta), although its sting is less painful. Its main source of food is honeydew collected from aphids and other insects.Southern fire ant shares its range (the area it inhabits) with the red imported fire ant (S. invicta), the golden fire ant (S. aurea) and S. amblychila.