Practical Information on the Scolytid Beetles of North American Forests. I. Barkbeetles of the Genus Dendroctonus

摘要

Contents: Destruction caused by the beetles; Possibilities of control; The beetle problem as important as the fire problem; Distinctive characters of the genus; Distribution; Host trees; Evidences of attack; Seasonal history; Habits; Secondary injuries to the trees; Favorable and unfavorable conditions for the beetles; Natural enemies of the beetles; Secondary enemies of the trees, and dependents, guests, etc., of the destructive beetles; General methods of control; Some results of efforts to control beetle depredations; Detailed information on the species.