How do I tell the difference between a subterranean termite and formosan termite by looking at the wood?

Texas A&M is on the ball with this one, with some excellent people behind their work. They have lots of stuff online, including a formosan distribution map that can help or you can contact them directly. Start here: a href="http://urbanentomology.tamu.edu/termites/formosan.cfm" rel="nofollow"http://urbanentomology.tamu.edu/termites…/a