Forest Insect and Disease Leaflets - FIDLs
Each FIDL provides information about one -- or several closely related -- insect or disease affecting forest trees in the United States. FIDLs describe their subject's distribution, appearance, life cycle, symptoms, and management. This series of over 170 leaflets has been produced under the auspicies of the US Forest Service's Forest Health Protection staff. The early publications in this series (1955-late 1970's) were called "Forest Pest Leaflets". View online versions through the links in the "related topics" section at right. Contact the National FIDL Coordinator for more information.
All FIDLs are now available online! The high quality pdf versions of each FIDL were created by Brennan Ferguson (Ferguson Forest Pathology Consulting, Inc.) through support provided by Amy Gannon, Forest Pest Management Specialist with the Montana Department of Natural Resources and Conservation (DNRC) Forestry Division. We thank them and the Montana DNRC for providing these files plus a listing of complete citations for the entire series to the USFS. Their extensive and meticulous efforts to locate and scan each FIDL, plus their promotion of revisions to many pathology FIDLs, have sparked renewed interest in these publications. View the Montana DNRC's Montana & Idaho FIDLs website.
Caveat about Management Recommendations
Management strategies and tactics discussed in older leaflets may be outdated. Contact your nearest USFS Forest Health Protection Office or your state's Department of Forestry or Natural Resources for current information.
Want to Write or Revise a FIDL?
We welcome offers to revise existing FIDLs or create new ones. View guidelines for authors, or the responsibilities of authors, regional FIDL contacts, and the national FIDL coordinator. View FIDL #119 for an example of the current format, though minor changes are planned.
Contacts for Additional Information
Paper copies of some -- but not all -- FIDLs are available in limited quantities at no cost. Additional information about available paper copies will be posted here soon.
last updated: October 2, 2008
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