1. Barr, B. A. (1969) Sound production in Scolytidae (Coleoptera) with emphasis on the genus. Ips. Can. Ent., 101, 636–72.
2. Bedard, W. D., Tilden, P. E., Wood, D. L., Silverstein, R. M., Brownlee, R. G. and Rodin, J. O. (1969) Western pine beetle: field response to its sex pheromone and a synergistic host terpene myrcene. Science, 164, 1284–5.
3. Bedard, W. D., Tilden, P. E., Lindahl, Jr., K. Q., Wood, D. L. and Rauch, P. A. (1980a) Effects of verbenone and trans-verbenol on the response of Dendroctonus brevicomis to natural and synthetic attractant in the field. J. Chem. Ecol., 6, 997–1013.
4. Bedard, W. D., Wood, D. L., Tilden, P. E., Lindahl, Jr., K. Q., Silverstein, R. M. and Rodin, J. O. (1980b) Field responses of the western pine beetle and one of its predators to host-and beetle-produced compounds. J. Chem. Ecol., 6, 625–41.
5. Berryman, A. A. (1970) Evaluation of insect predators of the western pine beetle. In: Studies on the Population Dynamics of the Western Pine Beetle, Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae) ( Stark, R. W. and Dahlsten, D. L., eds). University of California Press, Berkeley.