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.
Colorado State - Forest Service - Forest Pest Mana
Information sheets on forest pests management (many in PDF format) available from the Colorado State University Cooperative Extension.
Dutch Elm Disease Information
This site provides information about Dutch elm disease and ELMguard - a new experimental preventative treatment being developed at the University of Toronto, Faculty of Forestry.
Exotic Forest Pest Information System for North Am
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 Fore
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.
University of California Cooperative Extension Sud
Provides practical information on this disease including history, hosts and symptoms, ecology, control and management, recent publications and events.
US Forestry Service Pest Alerts
Collection of forest and tree health publications and fact sheets, primarily for midcontinent North America.
US National Forest Health Monitoring Program
US national program designed to determine the status, changes, and trends in indicators of forest condition on an annual basis. Provides forest health highlights by State or Region.
USDA Forest Insect and Disease Leaflets
USDA technical publications that address specific tree pests and diseases, including identification and control.