Formosan subterranean termite

Definition

An invasive species of subterranean termite, Coptotermes formosanus (family Rhinotermitidae), native to southern China and now established as a destructive pest across East Asia, South Africa, Sri Lanka, Hawaii, and the continental United States. Colonies are exceptionally large—often containing millions of individuals—and can cause rapid structural damage to timber, living trees, and crops. The species is distinguished by its aggressive foraging behavior, carton nest construction, and ability to maintain above-ground colonies in moist environments without soil contact.

Etymology

Named after Formosa (the former Western name for Taiwan), where the species was first described from introduced populations; 'subterranean' refers to the typical soil-nesting habit, though carton nests may occur above ground.

Example

In New Orleans, Formosan subterranean termite colonies have infested live oak trees and historic buildings, producing massive carton nests inside wall voids that can hold several liters of water and sustain the colony independently of soil moisture.

Synonyms

• Coptotermes formosanus

Related Terms

• subterranean termite
• Rhinotermitidae
• termite carton nest
• invasive insect
• structural pest
• Isoptera
• Blattodea

Usage Notes

Often abbreviated FST in pest management literature. Distinguished from native Reticulitermes subterranean termites by larger soldiers with oval-shaped heads and more extensive carton nest construction. The common name is frequently shortened to 'Formosan termite' in non-technical contexts, though this omits the ecologically significant 'subterranean' descriptor. Not to be confused with drywood or dampwood termites, which lack the soil-foraging ecology and colony size of C. formosanus.