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The Formosan termite, Coptotermes formosanus, is an invasive subterranean termite that causes significant damage in the United States and is one of the most destructive termite species in the world today. In the US, it is currently found in Florida, Alabama, Georgia, Louisiana, Mississippi, South Carolina, North Carolina, Tennessee, Virginia, Texas, Arizona, California and Hawaii. It has been and is continuing to be transported to new areas by human-aided movement of wood packing materials, wood mulch and old railroad ties. Here are some facts of the Formosan Termite, sometimes referred to the “Super Termite”:
Workers of Formosan termites are white to off-white in color and are difficult to distinguish from other termite species. Therefore, soldiers or reproductive caste termites are needed for proper identification. Although ants often swarm at the same time of year as do termites, it is easy to distinguish ants from termites by the shape of their bodies, wings and antennae.
Formosan termite soldiers have tear dropped or egg-shaped, heads compared to the more rectangular head of native subterranean termites. Formosan termite soldiers are more aggressive than native subterranean termite soldiers. When disturbed, they will exude a small amount of a white defensive secretion from a gland called the fontanel, located on the front of the head. They can also attach themselves to a finger with their mandibles (mouthparts). Soldiers will make up between 5-10 percent of a colony.
Winged Formosan termite reproductives or "swarmers" are yellowish-brown and 12-15 mm (0.5-0.6 inch) in length. They swarm at night in late May and early June and are attracted to lights. They have a dense covering of hair on their transparent wings. There are some drywood termites that also have a honey-brown color and are about the same size as Formosan termites. Like the Formosan termites they swarm at night and are attracted to artificial lights. The two species can, however, be distinguished by identifying features such as veins in the wings and characteristics of the head.