While difficult to identify due to their habitat, drywood termites are small winged or wingless insects that are pale brown or yellow in color. Winged drywood termites lack the pincers that the wingless variety possess, and all drywood termites leave small fecal pellets useful for identification purposes.
Drywood termites generally do not expose themselves unless they are swarming, preferring instead to live deep within wood that they have infested. Winged drywood termites are most commonly seen outside of their preferred environment. Drywood termite fecal pellets are routinely used to diagnose infestations and appear as elongated capsules that are brown in color and have "depressed surfaces separated by six longitudinal ridges," notes the University of California's Statewide Integrated Pest Management Program.