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Individual Highlight

Patterns and Probabilities of Spread Highlight Hot Spots in Asian Longhorned Beetle Infestations

Photo of Reconstructed pattern of spread in Worcester. USDA Forest ServiceReconstructed pattern of spread in Worcester. USDA Forest ServiceSnapshot : A Forest Service scientist in collaboration with the Animal Plant Health Inspection Service is accelerating the fight against the Asian longhorned beetle by identifying infestation hot-spots.

Principal Investigators(s) :
Trotter, III, R. Talbot 
Research Station : Northern Research Station (NRS)
Year : 2015
Highlight ID : 861


The Asian longhorned beetle (ALB) threatens the stability and sustainability of maples, willows, and 13 other genera of trees in North America and Europe. In the United States, the ALB established itself in five locations; three are urban, with two already eradicated. Unfortunately, the two remaining infestations (Massachusetts and Ohio) are well established in forested areas which grade from urban to rural, placing the beetle in an excellent position to threaten large tracts of eastern forests. Eradication programs depend on surveying individual trees in the regulated areas. To date, about 3 million trees have been surveyed, and 50,000 infested trees have been identified and removed from regulated areas totaling more than 300 square miles, representing a substantial and expensive undertaking. Working with data collected by the USDA Animal Plant Health Inspection Service during the eradication process, Forest Service researchers and their APHIS collaborators have identified patterns and probabilities of spread among trees in the infested areas and have developed tools to estimate the probability of beetle presence for each hectare (2.47 acres) within managed areas. This information is provided to land managers to help optimize efforts to eradicate ALB by pointing to potential infestation hot spots.

Forest Service Partners

External Partners

  • USDA Animal Plant Health Inspection Service