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Dendroctonus - Pine Bark Beetles (4)

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	California Oak Mortality Task Force - http://www.cnr.berkeley.edu/comtf/ Task force focusing on the pathogen causing Sudden Oak Death disease through research, management, education and public policy.
	Invasive and Exotic Species of North America - http://www.invasivespecies.gov/ Provides extensive information on all kinds of invasive species in North America.
	Forestry Images - http://www.forestryimages.org/ Quality photographs of forest insects and disease organisms. Contains image search or browse by categories.
	University of California Cooperative Extension: Sudden Oak Death Facts - http://news.ucanr.org/newsstorymain.cfm?story=439 Provides practical information on this disease including distribution, symptoms, prevention, quarantines and look-alike diseases.
	Focus on Woody Plant Diseases - http://www.urbanext.uiuc.edu/focus/ Information by host plant on diseases and damages affecting trees and perennial flowers from the University of Illinois Extension.

	Bugwood Network, The University of Georgia - http://www.bugwood.org/ Extensive resource on forest insects and related topics.
	Gypsy Moth in North America - http://www.fs.fed.us/ne/morgantown/4557/gmoth/ Extensive information on the biology, impact, distribution and management of this exotic insect in North America.
	Sudden Oak Death - http://cnr.berkeley.edu/blogs/news/2008/04/sudden_oak_death_pathogen_is_e.php Provides information on research undertaken at UC Berkeley into this disease which concluded that the pathogen responsible was evolving.
	Forest and Shade Tree Pathology - http://www.forestpathology.org/ Online textbook, news and upcoming meetings of forest pathology.
	Plant disease diagnostics (Minnesota) - http://www.extension.umn.edu/projects/yardandgarden/diagnostics/ 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.

	Kelly Research and Outreach Lab: Sudden Oak Death - http://kellylab.berkeley.edu/sudden-oak-death/ Provides information on the research and monitoring activilties of this group at the University of California, Berkeley.
	Gypsy Moth - http://www.gypsy-moth.com A short account of this caterpillar pest of maples, oaks and elms.
	Brown Spruce Longhorn Beetle - http://www.brown-spruce-longhorn-beetle.com Brief account of this pest of spruce trees, its growth, and means of control.
	Asian Longhorned Beetle - http://www.asian-longhorned-beetle.com Brief account of the introduction of this Chinese insect into North America, and with a list of the affected species.
	Pine Root Rot: A Biocontrol System - http://www.biology.ed.ac.uk/research/groups/jdeacon/microbes/heterob.htm Information on the use of the weakly parasitic fungus, Phlebiopsis gigantea, to prevent the attack of the pathogenic fungus, Heterobasidion annosum.

	Insects and Diseases of Eastern Canada's Forests - http://www.cfl.scf.rncan.gc.ca/collections-cfl/home.html An extensive collection of images and a variety of information on the main insects and diseases of the forests of Quebec and Eastern Canada.
	Tent Caterpillars - http://www.tent-caterpillar.com 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.
	Problem: Galls - http://www.hfrr.ksu.edu/DesktopModules/ViewDocument.aspx?DocumentID=1634 Provides information on these abnormal growths caused by insects and recommendations on control.
	Sedelmeier Forestry Research Fund - http://www.sedelmeierforestryresearchfund.org/index.html 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.
	Dutch Elm Disease - http://www.hfrr.ksu.edu/DesktopModules/ViewDocument.aspx?DocumentID=1619 Provides information on this disease caused by Ophiostoma ulmi, its host plants, symptoms and recommendations.

	Oak Wilt - http://www.hfrr.ksu.edu/DesktopModules/ViewDocument.aspx?DocumentID=1673 Information on this disease caused by the fungus Ceratocystis fagacearum, its hosts, symptoms and recommendations for control.
	Fytofarm Ltd. - http://www.fytofarm.com Company providing bark beetle control systems and researching insect aggregation pheromones.
	USDA Forest Insect and Disease Leaflets - http://www.na.fs.fed.us/spfo/pubs/fidlpage.htm USDA technical publications that address specific tree pests and diseases, including identification and control.
	Key to the Forest Insect Pests of Papua New Guinea - http://www.fzi.uni-freiburg.de/InsectPestKey-long%20version/index.htm 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

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