It usually happens on a warm evening after rain. A cloud of small winged insects appears near a window or around a light, and by morning there are tiny wings scattered across the sill.
The question everyone asks next is whether those were termites or flying ants. The two look alike at a glance, and the answer matters, because one is usually a minor nuisance and the other is a signal about your house.
You can tell them apart in about ten seconds once you know where to look.
Straight to it
Flying ants are the insect most often mistaken for termites, and three features separate them: the antennae, the waist, and the wings.
Termite swarmers have straight antennae, a thick waist, and four wings of equal length that shed easily. Flying ants have bent antennae, a pinched waist, and front wings longer than the back pair.
Swarmers indoors, or piles of shed wings on a windowsill, indicate a mature colony nearby and are worth an inspection rather than an emergency.
Swarm season in South Florida runs roughly from late winter through spring, which is when these questions spike.
Get close enough to see the body. These three features settle it almost every time.
| Feature | Termite swarmer | Flying ant |
|---|---|---|
| Antennae | Straight, like a string of beads | Bent at an elbow |
| Waist | Thick, no pinch between segments | Narrow and pinched |
| Wings | Four of equal length, extending well past the body | Front pair longer than the back pair |
| Shed wings | Drop off easily and pile up | Less likely to leave piles |
| Body shape | Soft, uniform, straight-sided | Distinctly segmented |
If you only remember one thing, remember the waist. A pinched waist means ant. A straight, thick body with no narrowing means termite.
Termite swarmers are reproductives leaving a mature colony to start new ones. They fly briefly, drop their wings, pair off, and look for a place to begin a colony.
That is why shed wings are often the first thing homeowners find, sometimes with no live insects left at all. A small pile of identical, equal-length wings on a sill or floor near a window is one of the clearest termite signals you will get.
Swarmers found outdoors could have come from a colony anywhere nearby. Swarmers emerging indoors, or wings piling up inside the house, are more concerning, because they suggest the colony may be in or under the structure itself.
Neither is an emergency tonight. Swarmers do not damage anything and die quickly on their own. But they are a reason to have the house inspected soon rather than someday.
Carpenter ants.
The most consequential mix-up after flying ants, because carpenter ants also damage wood. The difference is that they excavate it for nesting rather than eating it, and their frass is coarse and fibrous with insect parts mixed in. Our carpenter ant guide covers how to tell their damage from termite damage.
Other winged insects around lights.
On a humid spring night, plenty of small flying insects gather at porch lights and windows. Most are harmless. The antennae and waist check above separates them from termites quickly.
Most people picture a visible nest, and that is part of why termites go unnoticed. You usually do not see the nest at all.
Subterranean termites nest underground and reach wood through mud tubes, pencil-width earthen tunnels running up foundations, walls, and framing. The tubes are the visible sign. The nest is out of sight.
Drywood termites live inside the wood they eat, so there is no separate nest to find. The evidence is frass, small hexagonal pellets pushed out of the wood and piling up below it.
Formosan termites can build nests above ground, including inside wall voids, made from chewed wood, soil, and saliva. These are rarely seen directly because they are concealed inside the structure. UF/IFAS documents Formosan and Asian subterranean termites as established across South Florida, which is why these above-ground colonies are a real concern here.
Walk the foundation and look for mud tubes on the exterior and interior walls.
Check windowsills and floors near windows and doors for shed wings, especially after warm, humid evenings in spring.
Look below wood trim, window frames, and door frames for small piles of pellet-like frass.
Tap exposed wood and listen for a hollow sound, and watch for paint that is bubbling or blistering in a way that looks like water damage.
If you find any of these, our termite prevention guide covers what to do next, and our termite library page covers the species found here.
Do not bother spraying them. Swarmers die within a short time on their own, and spraying them does nothing to the colony they came from.
Vacuum up the insects and wings, but first put a few in a sealed bag or jar. A sample lets a technician confirm the species in seconds.
Note where you found them and when. Location and timing help pinpoint where the colony might be.
Then schedule an inspection. The swarm is a message about the colony, and the colony is the part that needs attention.
If you found winged insects or shed wings and are not sure what they are, an inspection confirms the species and tells you whether the colony is in the structure. Wise House Pest Control offers a free inspection across Palm Beach County, Martin County, and St. Lucie County.
1177 Hypoluxo Rd Suite C-31 Lantana, FL 33462
464 NW Peacock Blvd, Unit 106 Port St Lucie, FL 34986
