Red Fire Ant

Description:

[From Wiki] This page is about stinging ants in the genus Solenopsis. For the aggressive red weaver ants sometimes called "fire ants" in souththeast Asia.

Habitat:

These pests prefer open, sunny areas such as pastures, parks, lawns, meadows and crop fields. But they also build mounds in rotting logs, around stumps and trees, and in or under buildings.

Notes:

I found in the backyard while I was walking. :)