Emerald Ash Borer in Westmoreland County

We probably all knew that something like this was coming this summer as the PA Dept. of Agriculture, DCNR Bureau of Forestry and others begin their survey for EAB. Read the News Release from the Pennsylvania Dept. of Agriculture for more information. Also, you can read my previous blog about the monitoring program in Pennsylvania.

EMERALD ASH BORER FOUND IN WESTMORELAND COUNTY; QUARANTINE IMPOSED

Campers Statewide are Urged to Stop Transporting Firewood

HARRISBURG – Emerald Ash Borer beetles have been found in Allegheny Township, Westmoreland County, bringing to seven the number of counties where the ash tree-destroying pest has been identified, Agriculture Secretary Dennis Wolff announced today.

The invasive beetle was first detected in Pennsylvania in the summer of 2007 in Butler County, and subsequently was found in Allegheny, Beaver, Lawrence, Mercer and Mifflin counties. To help slow the spread of the beetle, the state-imposed quarantine for those six counties is being expanded to include Westmoreland County.

State and federal Emerald Ash Borer quarantines restrict the movement from the quarantine area of ash nursery stock, green lumber and any other ash material, including logs, stumps, roots and branches, and all wood chips.

This summer, 20 crews – 15 in Western Pennsylvania, one in Mifflin County, and four in the eastern part of the state – and two regional coordinators have been deployed to assess the spread of the beetle. The Westmoreland County crew detected the new infestation.

“Our survey crews are assessing the extent of the infestation in Westmoreland County and surrounding areas,” said Wolff. “We remind consumers to heed the quarantine when traveling and camping this spring and summer—not just in the quarantined areas but throughout Pennsylvania—to prevent any further spread of the beetle.”

Due to the difficulty in distinguishing between species of hardwood firewood, all hardwood firewood—including ash, oak, maple and hickory—are considered quarantined. Since many species of wood-boring insects, including the Emerald Ash Borer, can be spread by transporting infested firewood and logs, campers and homeowners are encouraged to use only locally harvested firewood, burn all of the firewood on-site, and not carry it to new locations.

Emerald Ash Borer is a wood-boring beetle native to China and eastern Asia. The pest likely arrived in North America hidden in wood packing materials commonly used to ship consumer and other goods. It was first detected in July 2002 in southeastern Michigan and neighboring Windsor, Ontario, Canada. The beetle has since been blamed for the death and decline of more than 20 million ash trees in Michigan, Ohio, Indiana, Maryland, Virginia and Illinois.

Typically, the beetles will kill an ash tree within three years of the initial infestation. Adults are dark green, one-half inch in length and one-eighth inch wide, and fly only from early May until September. Larvae spend the rest of the year beneath the bark of ash trees. When they emerge as adults, they leave D-shaped holes in the bark about one-eighth inch wide.

There is no known practical control for this wood-boring pest other than destroying infested trees.
People who suspect they have seen Emerald Ash Borer should call the department’s toll-free pest hotline at 1-866-253-7189. For more information about the quarantine, contact Walt Blosser at 717-772-5205, and for more information about Emerald Ash Borer, contact Sven-Erik Spichiger at 717-772-5229.
Information is also available at www.agriculture.state.pa.us/emeraldashborer.

Emerald Ash Borer Alert

Emerald ash borer will be emerging from infested ash trees very soon. It is time to be alert to this insect. As the adults emerge they leave a D-shaped exit hole in the bark of an infested ash. The adults will feed some on ash leaves, mate, females will lay eggs. When the eggs hatch the larvae will chew through the bark into the cambium layer where it will feed. It will then pupate in the inner bark in the fall and over winter in that stage. In late May to mid-June the adults will emerge head first through the D-shaped hole they have chewed.

To help monitor or detect the presence of emerald ash borer the Pennsylvania Department of Agriculture and Pennsylvania Bureau of Forestry will again be putting up purple “traps” in selected areas. You may have seen some of these traps already. The adult beetles are attracted to the trap and when they land they are stuck on the sticky substance that is on the surface of the trap. Crews will periodically inspect these traps for adult beetles. The traps will not attract emerald ash borer into the area, it will only attract beetles that may already be present. These traps will only work if they are not disturbed so we encourage you not to touch, move or disturb them in any way. Also, be on the alert for adult beetles or D-shaped exit holes in ash trees. Other symptoms include: dieback in the top of the tree (similar to ash yellows and ash decline), heavy sprouting from the lower portions of the tree, heavy woodpecker activity and splitting of bark. If you see any of these or other symptoms (visit the Bradford County Extension website and click on the emerald ash borer picture to go to an excellent web site about the borer for more info and symptoms) call your county Penn State Cooperative Extension office, Pennsylvania Department of Agriculture office or Pennsylvania Bureau of Forestry office. If you believe you have an emerald ash borer please take it to one of the offices listed above. MAKE SURE IT IS DEAD DO NOT TRANSPORT LIVE BEETLES. Put it in a bottle of alcohol for transport. You can get me at 570.265.2896 or rsh7@psu.edu if you have questions or think you have emerald ash borer.

In addition to the pest being found in Mifflin County, PA, it is still spreading in the Midwest. It was discovered in St. Paul, MN in May. Fifty-nine trees were removed in St. Paul and the quarantine was expanded to two counties in Minnesota.