It may sound like a scene out of a science fiction movie, but termite swarms are a common and necessary occurrence for the survival and dispersal of termites. In fact, many people first notice termites on their property when they see a swarm. However, flying termites in or around your home indicates that you’ve probably had a colony problem for a while.
Why Do Termites Swarm?
Termites swarm after their original colony has reached a certain capacity level and is ready to expand. For most colonies, this happens once a year. Hundreds or even thousands of swarmers, called alates, are produced with the sole purpose of reproduction and expansion. The swarmers include both males and females, and the number bred each year varies based on colony size and termite subgroup. They live in the soil near the surface of their nest until conditions are right to take flight. These swarming preparations are made around the same time throughout colonies in the area.
When conditions are right, the swarmers launch into the air and pair off. Once paired, the couples shed their wings, mate and find a new place to start a nest to populate, if available. This occurs even if there are no nearby colonies to exchange alates with. The launches are typically spread out over a few days, with one large release the first day and smaller ones on subsequent days.
When Do Termites Swarm?
The timing of flight varies by subgroup—subterranean termites often swarm in the spring and during daylight, drywood termites wait until the late summer or early fall and dampwood termites swarm in the summer.
Regardless of species, most wait until a day following a rain shower when the weather is overcast and winds are under 6 mph. Damp soil aids in the nest-building process for newly paired mates, and survival rates are higher when there is more humidity. Termites don’t have to be outside to swarm, though. They can sometimes miscalculate their launching point and swarm indoors.
Check for Infestation
Because termite swarms indicate that a current colony is flourishing nearby, it’s important to inspect your home and property if you see a swarm close to your home. If you think you may have termite activity, be sure to call an Orkin termite control specialist for a free inspection as soon as possible.