Emerald ash borer new finds in Wisconsin

EAB peak emergence map. Tan color is approaching peak emergence, light green is peak emergence, and dark green is past peak EAB emergence. Map from June 19, 2017.

EAB peak emergence map. Tan color is approaching peak emergence, light green is peak emergence, and dark green is past peak EAB emergence. Map from June 19, 2017.

Initial emergence of Emerald ash borer (Agrilus planipennis) has begun in Wisconsin and is likely occurring throughout Wisconsin at this time. Peak emergence is approaching.

EAB continues to be found in new areas. Wisconsin continues to track EAB at the municipality or township level; quarantine counties are shown in tan and infested areas are shown in green on the map below.

New county quarantines

  • none

New finds in counties already quarantined

  • Columbia County — cities of Columbus and Lodi
  • Dane County — villages of Dane, Waunakee, and Windsor; cities of Fitchburg, Monona, and Sun Prairie; towns of Blooming Grove, Dane and Westport
  • Dodge County — city of Horicon
  • La Crosse County — town of Washington
  • Manitowoc County — town of Cooperstown
  • Sheboygan County — village of Elkhart Lake
  • Trempealeau County — village of Trempealeau
EAB quarantine map. Counties shaded in tan are quarantined for EAB, and include much of the southern half of Wisconsin, as well as other counties. Areas shaded in green are the townships and municipalities where EAB has actually been identified, and shows that not all counties that are quarantined are fully infested.

EAB quarantine map. Counties shaded in tan are quarantined for EAB, green areas are townships and municipalities where EAB has actually been identified.

Written by: Linda Williams, forest health specialist, Woodruff, (Linda.Williams@wisconsin.gov), 715-356-5211 x232.

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