In the United States, we can find around 40 species of termites. Worldwide, there are at least 2,000 species of termites. Looking at them, they do not seem to amount to much. How can an insect so tiny destroy an entire building, Measuring just about ¼ to ½ inches in length. They have straight bodies and short antennae. Their colors can be from light to brown. But since termites can number up to millions even, they can easily eat up all the wood in our homes.