This Topic in Depth explores some of the diseases and other threats, such as gypsy moths, emerald ash borers, and Asian longhorned beetles that certain trees must contend with to remain healthy and vital.

Chalcidoid wasps now have an excellent database all their own thanks to John Noyes of London's Natural History Museum. The Universal Chalcidoidea Database contains an extensive set of taxonomic and bibliographic records,...

The Emerald Ash Borer(EAB) has become a pesky problem in North America in recent years, after being introduced into the ecosystem in the early 1990s. This information site from the USDA Forest Service is dedicated to...

The USDA Forest Service compiled information from its gypsy moth suppression, eradication, and slow-the-spread projects to provide you with a comprehensive informational website on gypsy moths. Information on the gypsy...

This site is home to an extensive online USDA text authored by S.E. McGregor, titled Insect Pollination Of Cultivated Crop Plants. Although originally written in 1976, the text is continually updated with new content....