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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.
Key to the Forest Insect Pests of Papua New Guinea - Allows the identification of the most important forest insect pests of Papua New Guinea and includes descriptions of insect signs, preventive measures, bibliographic references and a comprehensive glossary of terms
Monitoring Sudden Oak Death - Created by the University of California's Sudden Oak Death Research Team, this site monitors the distribution of the disease.
Pine Root Rot: A Biocontrol System - Information on the use of the weakly parasitic fungus, Phlebiopsis gigantea, to prevent the attack of the pathogenic fungus, Heterobasidion annosum.
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.
Sedelmeier Forestry Research Fund - Provides funding for critical research into the causes, control, prevention, and the eventual elimination of some of the diseases that affect the trees of our forests.
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.
University of California Cooperative Extension: Sudden Oak Death Facts - Provides practical information on this disease including distribution, symptoms, prevention, quarantines and look-alike diseases.
USDA Forest Insect and Disease Leaflets - USDA technical publications that address specific tree pests and diseases, including identification and control.