Built from published species range maps and university extension guidance, cited on this page. Last updated July 20, 2026. Who makes TermiteZone

Formosan termite

Coptotermes formosanus

The aggressive invasive behind the Gulf Coast's massive dusk swarms.

Where they live

An introduced subterranean termite established across the Gulf South, coastal Southeast, Texas, parts of California, and Hawaii, and rarely found north of about 35°N. Its colonies are enormous, so damage comes fast.

When they swarm

It swarms at dusk on warm, humid, still evenings from late spring into early summer, the huge flights the New Orleans area is known for around Mother's Day. Swarmers fly to lights by the thousands.

Signs of an infestation

The same mud tubes and discarded wings as native subterraneans, plus carton nests (a chewed-wood-and-soil material) inside walls, and unusually rapid structural damage.

How they're treated

Handled like other subterraneans, a liquid barrier or baiting system, but Formosan pressure makes prompt, professional treatment and an active warranty especially important.

Think you have formosan termites?

An inspection is the only way to be sure. We can connect you with a vetted local termite pro for a free, no-obligation quote.

Other termites: Subterranean termite, Drywood termite, Desert subterranean termite.