Are These Termites or Ants?

You’ve found large numbers of insects flying about the house, or perhaps you have noticed an accumulation of dead insects on the floor or on a windowsill. Are these termite swarmers or ants? This is an important question. f they are termite swarmers, it means the building is infested with termites and needs to be professionally treated. Depending on the size of the building, that’s going to cost around a thousand dollars or more. If they are ants, some type of treatment may still be needed, but you may be able to do it yourself, and even if you hire a pest control company, it won’t be nearly as costly.

So how do you distinguish termite swarmers from ant swarmers? This is really pretty easy, but it can help to have some type of magnifying glass or hand lens. This figure shows the three key characteristics to look for:

a drawing of termite and carpenter ant with the differences shown.

How to Distinguish Termite Swarmers from Ant Swarmers

Trait	Termites	Ants
Wings	Front wings and hind wings equal in length Wings about twice as long as body (Wings may be missing.)	Front wings notably longer than hind wings (Wings may be missing)
Antennae	Antennae straight and beadlike	Antennae have a distinct elbow or angle
“Waist”	No waist, abdomen broadly joined to thorax	Narrow waist, abdomen narrowly joined to thorax
Notes: Termites and ants both shed their wings shortly after swarming, so wings are not always present on swarmers. (Ant workers never have wings.) Eastern subterranean termite swarmers are black; Formosan termite swarmers are tan to light brown. Ant swarmers also vary in color, ranging from light tan to black, depending on species.

Compare the following pictures of termite swarmers to those of ant swarmers.

Hover and then click on the left or right arrows to progress through the slide show.

This is an Eastern subterranean termite swarmer. Note the long wings, with both pairs of equal length, and the straight, beadlike antennae.
Formosan subterranean termite swarmer. Note all four wings are equal in length.
Eastern subterranean termite swarmers after shedding wings. Note the broad waist and the straight, beadlike antennae.
Dead eastern subterranean termite swarmers lying on a windowsill. Note that some have already shed their wings.
Accumulation of dead eastern subterranean swarmers on carpet. These were behind a couch and were discovered when the couch was moved. The swarm had occurred several weeks earlier, but was not noticed then.
Black carpenter ant swarmer. Note the narrow waist and that the hind wing is shorter than the forewing.
Chestnut carpenter ant swarmer. Note the elbowed antennae and narrow waist.