» Asian Longhorned Beetle - Brief account of the introduction of this Chinese insect into North America, and with a list of the affected species.
» Brown Spruce Longhorn Beetle - Brief account of this pest of spruce trees, its growth, and means of control.
» Bugwood Network, The University of Georgia - Extensive resource on forest insects and related topics.
» California Oak Mortality Task Force - Task force focusing on the pathogen causing Sudden Oak Death disease through research, management, education and public policy.
» Exotic Forest Pest Information System for North America - Database containing information on exotic insects, mites and pathogens with potential to cause significant damage to North American forest resources.
» Focus on Woody Plant Diseases - Information by host plant on diseases and damages affecting trees and perennial flowers from the University of Illinois Extension.
» Forest and Shade Tree Pathology - Online textbook, news and upcoming meetings of forest pathology.
» Forestry Images - Quality photographs of forest insects and disease organisms. Contains image search or browse by categories.
» Gypsy Moth - A short account of this caterpillar pest of maples, oaks and elms.
» Gypsy Moth in North America - Extensive information on the biology, impact, distribution and management of this exotic insect in North America.
» Insects and Diseases of Eastern Canada's Forests - An extensive collection of images and a variety of information on the main insects and diseases of the forests of Quebec and Eastern Canada.
» Invasive and Exotic Species of North America - Provides extensive information on all kinds of invasive species in North America.
» Monitoring Sudden Oak Death - Created by the University of California's Sudden Oak Death Research Team, this site monitors the distribution of the disease.
» Plant disease diagnostics (Minnesota) - Plant disease diagnostics by the University of Minnesota Extension Service. Mainly designed for plant disease problems in yards and gardens. It is based on visual observations of symptoms. It has a section on trees that might be useful in forestry.
» Tent Caterpillars - The Eastern tent caterpillar affects black cherry trees and other fruit and shade trees. The forest tent caterpillar infests hardwood trees such as sugar maple and oak.
» US Forestry Service Pest Alerts - Collection of forest and tree health publications and fact sheets, primarily for midcontinent North America.
» USDA Forest Insect and Disease Leaflets - USDA technical publications that address specific tree pests and diseases, including identification and control.
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