Termites are often confused with carpenter ants. Carpenter ants normally attack only wood that is already decayed, whereas termites can go after structurally sound wood. It pays to know which you're dealing with. Here are the basic differences. Termites: straight antennae, broad waist, wing pairs of equal size on winged forms, workers cream colored, no sawdust at nest, may be caked with mud. Carpenter Ants: elbowed antennae, pinched or narrow waist, front part of wings larger than back pair, workers brownish or black, sawdust at entrance to nest.