Syren, R. M., and P. Luykx. Weesner, F. M. 1970. Termites of the Nearctic Region, pp. Academic Press, N.Y. Fig. 1. Kalotermes approximatus damage in living red cedar.
Arrow indicates a frass-filled gallery a few mm beneath the bark.
Note centrally located damage and the high proportion of heartwood. Collections of Kalotermes approximatus in North Carolina. The placement of lines separating physiographic provinces is from Radford et al.