Franklin and Wake counties join quarantine area for emerald ash borer

FOR IMMEDIATE RELEASE
TUESDAY, JUNE 30, 2015

CONTACT: Phillip Wilson, plant pest administrator
NCDA&CS Plant Industry Division
919-707-3753

RALEIGH – Franklin and Wake counties are the latest to come under quarantine rules restricting the movement of hardwood firewood, ash nursery stock and other ash materials after emerald ash borers were confirmed in both counties. Agriculture Commissioner Steve Troxler signed an emergency quarantine order allowing the expansion.

An emerald ash borer was found via the capture of a cerceris wasp in Franklin County. The N.C. Department of Agriculture and Consumer Services’ Plant Industry Division had been monitoring sites in Franklin County and throughout the state looking for evidence of EAB. Part of the monitoring included capturing cerceris wasps around baseball fields to see what food sources or insects they were bringing back to their underground nests. The method had been used to find EAB in Connecticut, and North Carolina is only the second state to successfully use this method in the United States.

Evidence of EAB was found by NCDA&CS staff in woods near the Raleigh-Durham International Airport.
“This brings the total counties in the state under EAB quarantine rules to seven, with detections in Granville, Person, Vance and Warren counties in 2013 and Wayne County earlier this year,” Troxler said. “We continue to monitor other counties for this highly destructive pest by trapping areas with ash trees. If you see the purple, triangle-shaped traps, please do not disturb them.”

The beetle was first detected in the United States in Michigan in 2002. It is responsible for the death or decline of tens of millions of ash trees across the country.

Under the state quarantine, all hardwood firewood and plants and plant parts of the ash tree — including living, dead, cut or fallen, green lumber, stumps, roots, branches and composted and uncomposted chips — cannot be moved outside the county.
The Plant Industry Division and the N.C. Forest Service are working in cooperation with the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service.

Symptoms of emerald ash borer in ash trees include a general decline in the appearance of the tree, such as thinning from the top down and loss of leaves. Clumps of shoots, also known as epicormic sprouts, emerging from the trunk of the tree and increased woodpecker activity are other symptoms. The emerald ash borer is not the only pest that can cause these.
Emerald ash borers overwinter as larvae. The adult beetle is one-fourth to a half-inch long and is slender and metallic green. When the adults emerge from a tree, they leave behind a D-shaped exit hole. The larvae can also create serpentine tunneling marks, known as feeding galleries, which are found under the bark of the infested trees.
Home and landowners are encouraged to report any symptomatic activity in ash trees to the NCDA&CS Plant Industry Division hotline at 1-800-206-9333 or by email at newpest@ncagr.gov. The pest can affect any of the four types of ash trees grown in the state.

What’s That Bug? Leaf Footed Bugs in the Garden

I work in a garden with a group of volunteers. The other day, a sharp eyed person pointed out some bright orange-red bugs like these on the leaves of one of our potato plants.

Nymphs of leaf footed bug Photo: http://franklin.ifas.ufl.edu/newsletters/tag/tomatoes/
Nymphs of leaf footed bug
Photo: http://franklin.ifas.ufl.edu/newsletters/tag/tomatoes/

These are the nymphs of the leaf footed bug, a relative of stink bugs. Adult leaf footed bugs are brown, with a flattened, leaf-shaped area on their hind legs. Both the nymphs and adults are pests that damage buds, flowers, fruits and seeds. Leaf footed bugs feed on many plants, including tomatoes, peaches, blueberries, beans, okra, and pecans. When these bugs feed on tomato fruit, they cause yellow, hardened spots to develop. Feeding on other fruits can cause brown spots to shriveled, misshapen fruits, depending on the number of bugs and the time the fruits are damaged.

Adult leaf footed bugs overwinter in weedy areas or under mulch and debris. They lay eggs in a row on the undersides of leaves or on stems. Eggs hatch in 5-7 days, and nymphs mature in 25-30 days.

Leaf footed bug adult Photo: Debbie Roos, NC Cooperative Extension
Leaf footed bug adult
Photo: Debbie Roos, NC Cooperative Extension

Leaf footed bugs and their stinkbug relatives are difficult to control, but scouting for these pests now will help keep populations from building up throughout the season. Removing the nymphs and adults by hand and dropping them into a container of soapy water is an effective means of control when populations are small. You may want to wear gloves when picking leaf footed bugs from your plants – they do have an unpleasant smell. There are few organic pesticides that are effective on these bugs, but hand picking now and reducing places where the adults can overwinter will help keep next year’s population in check. If you choose to use an insecticide to control a large population of leaf footed bugs, pyrethroids can be used as directed.

Just a quick word of caution, though – some assassin bugs (beneficial insects) are also orange and can look similar to the leaf footed bug nymphs shown above. For photos of assassin bugs, click here

For more information about leaf footed bugs:

http://pender.ces.ncsu.edu/2011/07/staying-ahead-of-stink-bugs/

http://www.ent.uga.edu/veg/solanaceous/leaffootedbuts.htm

http://growingsmallfarms.ces.ncsu.edu/growingsmallfarms-leaffootbug/