Maine continues regulating movement of emerald ash borer Thu, 04/29/2021 - 1:00pm Emerald ash borer (EAB), an invasive wood-boring beetle from Asia is a threat to all ash trees in North America. Image shows EAB and D-shaped exit holes from which adults emerge in the spring. (Photo courtesy of Knox Lincoln Soil and Water Conservation District) Emerald ash borer map. (Courtesy Maine Department of Agriculture, Conservation and Forestry Emerald ash borer map. (Courtesy Maine Department of Agriculture, Conservation and Forestry Emerald ash borer map. (Courtesy Maine Department of Agriculture, Conservation and Forestry On January 14, 2021 the federal quarantine regulations restricting the movement of the emerald ash borer (EAB) were removed by the USDA to refocus their resources on biological control of the pest, according to the Department of Agriculture, Conservation and Forestry, in a news release. Despite the USDA’s shift in emphasis, the Department of Agriculture, Conservation and Forestry (DACF) Maine Forest Service (MFS) and Plant Health Program (PHP) will continue to regulate the movement of EAB because an estimated 90 percent of Maine's ash trees remain outside of the currently regulated quarantine areas.