. Forest insect conditions in British Columbia [microform] : a preliminary survey. Insect pests; Arbres; Forest insects; Insectes nuisibles; Insectes forestiers; Trees. 21 base, without involving the death of the trees. Its work in green trees results in large masses of gum, gum-tubes, about the base of the tree. The species is very widely distributed. It occurs across Canada from the Yukon and British Columbia to Newfoundland and Nova Scotia, and throughout the eastern and western United States and the western portion of Mexico. CONTROL UEA8URES. This species will probably not be found in Bri
. Forest insect conditions in British Columbia [microform] : a preliminary survey. Insect pests; Arbres; Forest insects; Insectes nuisibles; Insectes forestiers; Trees. 21 base, without involving the death of the trees. Its work in green trees results in large masses of gum, gum-tubes, about the base of the tree. The species is very widely distributed. It occurs across Canada from the Yukon and British Columbia to Newfoundland and Nova Scotia, and throughout the eastern and western United States and the western portion of Mexico. CONTROL UEA8URES. This species will probably not be found in British Columbia as the sole cause of extensive trouble. When it is assisting more destructive species in killing timber, control work for the outbreak should include the removal of the bark from the stumps of the infested trees during the winter following the Fi«. 7 -The Red Turpentine Hark-beetle, ( DendroclonuH talrn« ; Greatly enlarged. (Original). In a region where extensive cutting is in progress, sufficient brpoding-places are provided by the dying bark of the stumps. When cutting ceases the beetles may attack the sound trees and cause more or less injury. When the species becomes very abundant in a locality, as evidenced by its borings in the base of spruce pnd pine stumps, its numbers should be reduced by the removal of the bark of the infested stumps during the winter following the infestation. SPREAD OF INFESTATION ABOUT PRINCETON. We have not yet sufficient information to enable us to determine definitely the rate of spread; but the number of infested trees is increasing very rapidly. The dying trees have been noticed about Princeton or three years. The trees attacked in 1911, or before, (which became red-tops the following summer), have lost nearly all their leaves; those attacked in 1912 are now red-tops, and those attacked this season, 1913, have the foliage fading from yellow to Please note that these images are extracted from
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