How can I tell if those are flying ants or termites swarming at the foundation of my house?

Ant alate

  • Ants have a thin waist (a narrow area between the thorax and first abdominal segment).
  • Front pair of wings is larger than the hind pair.
  • Wings have few veins and are usually clear.

Termite alate

  • Termite thorax and abdomen are broadly connected.
  • Four wings are approximately the same size and shape.
  • Wings have many veins and may be milky-colored.
Anatomical differences between ant alate (top) and termite alate (bottom).  Drawings courtesy of University of Florida Extension.