This handbook is designed to enable people who are interested in trees to identify the insects and mites causing damage to them. About 90 species of insects and mites that have caused noteworthy damage to pines in Canada east of the Rocky Mountains are included. The insect and/or its damage can be identified by means of flow chart keys, and the identity of the insect or mite can be confirmed by reference to about 190 colour illustrations. The accompanying biological sketch for each insect or mite usually includes information, based largely on Fores Insect and Disease Survey records, on necessity for control. Where control is necessary, methods are suggested. Common names of insects are generally used, but scientific names are also given in the text.