Formosan termites are one of several termite species that threaten homes and other structures in Hawaii and parts of the southern half of the continental United States. Originally from Mainland China, Formosan termites have been established in the continental U.S. for only about 50 years. In fact, they are more vigorous and aggressive than native termites. In fact, the Formosan termite has been called the "Super termite" because of its tendency to support large colonies and its ability to consume large amounts of wood in a relatively short time.
A mature colony of Formosan termites can number in the millions and consume as much as 13 ounces of wood per day. As a result, they can severely damage a structure in as little as three months. Formosan termites are most visible during their swarming or mating flight. However, they actually cause more damage after the swarm is over. For this reason, it's extremely important to have your home inspected and protected by a pest professional as soon as you find out that you have Formosan termites on your property.
There are a few important facts you should understand about the behavior of Formosan termites:
Formosan termite swarmers are larger than native species. They may swarm in the evening and later in the year (May-June), and are strongly attracted to lights. You may see the swarmers near the porch light, windows, doors, etc. Swarms may come from an attic space into the home through vents/openings in the ceiling, as these termites are attracted to lights.
Termites are most visible to homeowners when they're swarming. Still, without protection termites can damage structures throughout the year. In fact, you could have an active termite infestation in your home and never see a swarm.