Zhang, Q.H., Byers, J.A., & Zhang, X.D. 1993. Influence of bark thickness, trunk diameter and height on reproduction of the long-horned beetle, Monochamus sutor (Col., Cerambycidae) in burned larch and pine. Journal of Applied Entomology 115:145-154. pdf

Abstract-- The small white-marmorated longicorn, Monochamus sutor L., is one of the most prevalent stem-infesting insects in burned areas of the Great Xing An Mountains, China. Burned trees of larch (Larix dahurica) and pine (Pinus sylvestris var. mongolica) are suitable for reproduction by M. sutor from the trunk base to within an average of 3.3 and 4.6 m from the top, respectively, for trees from 13-23 m in height. The emergence of M. sutor gradually declines with height, and ceases at a bark thickness of less than 0.3 cm in both species. Emergence increased in a logarithmic relationship with either bark thickness or trunk diameter in both tree species. Two linear regression equations, Y = 2.01 + 0.426X and Y = 0.07 + 0.771X, were derived in order to predict the average density of M. sutor emergence per 0.1 m2 bark area (Y) for the trunk based on an observed density (X) at breast height position (1.5 m) for larch and pine, respectively. The total number emerging from a tree can be predicted by multiplying the average density estimate by the expected reproduction bark area. Reproduction of cerambycids is discussed with respect to selection of host trees, interactions with guild species, effects of bark thickness, and forest fire dynamics.

Chemical Ecology