The vast majority of insect damage to trees is caused by 22 common insect pests these insects cause enormous economic damage by destroying landscape trees that must be removed and replaced and by destroying trees that are essential to the north american lumber industry. A hardback book for use in e canada with 10 chapters on the most common and destructive insects harmful to spruce larch pine fir arbor vitae thuja spp birch oak maple elm and poplar insects harmful to forest trees see more details with 10 chapters on the most common and destructive insects insects subject category . Insects and diseases that damage trees between 1997 and 2002 70 insects and 27 diseases were reported to cause tree damage or mortality on over 30 million acres of forestland in the northeast usda forest service 2003c pests that caused damage in multiple states and years are listed in tables 1 3 and their. Additional physical format online version martineau rene insects harmful to forest trees montreal quebec multiscience publications in co operation with the canadian forestry service environment canada and the canadian govt pub centre supply and services canada c1984. Insects insects are the most destructive agents affecting forest and shade trees in the south tree roots stems limbs needles leaves of healthy or weakened trees or logs waiting to be sawed into lumber are all subject to attack insects class insecta are by far the most numerous animal life inhabiting the forest
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