Subterranean Termites
Infestations of the subterranean termites in a building may be recognized by the swarming of the reproductives in the spring in or about the building, by mud protruding from cracks between boards or beams or along basement joists, by the earthen tubes extending from the soil to the wood, or by the hollowness of the wood in which the insects have been tunneling.

Dampwood Termites
While subterranean termites may be found in every state except Alaska, the dampwood termites are much more limited in geographic distribution. They can be found mainly in the coastal mountains and inland mountains of California, Oregon and Washington, and to a limited degree in Arizona and Nevada. Florida is home to a common species of dampwood termite. As their name implies, dampwood termites infest wood that has an excessive moisture condition, and therefore are not often found in structures.