The swarmer is up to 1 inch long, including wings. The antennae usually have more than 22 segments. They are not hairy and have 1 or more large spines along the length of the tibia and the apex. The coloration of the body is amber. The soldier between 3/8-3/4 inches long. The mandibles have an unequal number of teeth on each member of a pair. Antennae are the same as the swarmer, as well as the spines and coloration. If the wood is sound, they will eat only the springwood, however, if the wood is decayed, they will eat across the grain, consuming both spring and summerwood. By doing this, they make a series of chambers connected by tunnels whose walls are smooth as if finely sandpapered.