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U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Invasive Species Risk Assessment

Invasive Pest Risk Maps

The development of risk maps for economically and ecologically important invasive species provides land managers with information to assess the potential for species introduction, establishment, and landscape susceptibility.

Sirex woodwasp

Sirex noctilio

Sirex woodwasp (Sirex noctilio) has been the most common species of exotic woodwasp associated with solid wood packing materials detected at United States Ports-of-entry. Detections of Sirex noctilio in the Conterminous United States outside of port areas have raised concerns as this insect has the potential to cause significant mortality of pines. Learn more about Sirex woodwasp
ips typographus

Ips typographus

The European spruce bark, or engraver, beetle is considered to be one of the most destructive pests of spruce on the continent of Europe. The ability to breed in very fresh bark, coupled with the habit of continuing to feed in the bark on completion of development, makes the insect a serious pest of spruce forests. Learn more about European spruce bark beetle

Phytophthora alni ssp alni

Phytophthora alni is a recently hybridized soil and waterborne pathogen causing root and collar rot of species of the genus Alnus (alder). Once introduced, the pathogen spreads naturally with streams, floods, and other drainage water. Learn more about Phytophthora alni

Orthotomicus erosus

Established populations of the Mediterranean Pine Engraver (Orthotomicus erosus) were discovered in the United States in 2004. This Eurasian bark beetle is native to the pine (Pinus) growing areas of Europe, Northern Africa and Asia. Learn more about Mediterranean Pine Engraver

Anaplophora glabripennis

The Susceptibility Potential Surface for Anoplophora glabripennis (Motschulsky), the Asian Longhorn Beetle was produced for the Conterminous United States in 1 square kilometer units by the U.S. Forest Service, Forest Health Assessment and Applied Sciences Team’s Invasive Species Steering Committee. Learn more about Asian Longhorn Beetle

Agrilus auroguttatus

The Wildland Oak Resources at Risk Map from Agrilus auroguttatus (originally named Agrilus coxalis) was produced by the U.S. Forest Service, Forest Health Assessment and Applied Sciences Team (FHAAST). Learn more about Agrilus auroguttatus

Agrilus biguttatus

The oak splendor beetle (Agrilus biguttatus [Fabricius]) is a potential threat to the oak forest in North America. Native to Europe the oak splendor beetle is a strong flier and is easily transported via wood packing materials and or firewood. Learn more about oak splendor beetle

Agrilus planipennis

The emerald ash borer (EAB), Agrilus planipennis, is a highly destructive invasive insect, killing an estimated 50 to 100 million ash trees in Canada and the United States. Learn more about emerald ash borer

Agrilus sulcicollis

The European oak borer - Agrilus sulcicollis (Lacordaire) is a potential threat to the oak forest in North America. Native to Europe the European Oak Borer was introduced to North America in Michingan and Ontario. Learn more about European oak borer

Lymantria dispar dispar

The European gypsy moth (EGM), Lymantria dispar dispar, is one of North Americas' most destructive invasive forest pests. It was accidentally introduced into the United States near Boston, MA in the late 1890s. Learn more about Lymantria dispar dispar