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Don't Move Gypsy Moth

Plant Protection and Quarantine

March 1999

Planning to move from an area infested with gypsy moth to an uninfested area? Moving your camper or recreational vehicle across border or State lines? You need to know about a regulation intended to prevent the spread of this pest.

Recent studies show that most new, isolated infestations of the gypsy moth were started from egg masses transported on outdoor household articlesgarbage cans, lawn furniture, children's toysany item accessible to the female moth at egg-laying time. As a result, the U.S. Department of Agriculture's (USDA) gypsy moth quarantine regulations require that such articles be inspected for all gypsy moth life stages prior to movement outside of a regulated area.

Why Regulation Is Needed

If you have lived where the gypsy moth is prevalent, you know the damage these leaf-eating caterpillars can cause. They defoliate trees and shrubs, giving summer landscapes a barren, winter look. Gypsy moths can defoliate up to 13 million acres of trees in 1 season. They crawl on homes, litter lawn furniture and pools, and make outdoor activities difficult to enjoy.

Unfortunately, people can unintentionally carry egg masses with them when they travel, making it easier for gypsy moths to spread far from their old neighborhood. Millions of Federal and State tax dollars have been spent in recent years to limit the movement of this pest and to eradicate the isolated infestations established in previously uninfested areas.

Failure to inspect household articles for gypsy moth life stages prior to movement from a regulated area is a violation of USDA quarantine regulations and may result in significant civil penalties. Inspecting your property for gypsy moths goes beyond being a good neighbor: it is required by law. Don't be responsible for moving an old pest to a new neighborhood.

Inspect for Gypsy Moth

You are responsible for making sure that your outdoor items don't move the gypsy moth. The quarantine regulations allow for self-inspection, and this factsheet can assist you. To do the inspection yourself, include anything accessible to a gypsy moth. Inspect any article left outdoors, stored in areas open to the outside, or stored indoors but used outdoors.

Remember, you are the key to preventing the movement of gypsy moth on outdoor household articles, including recreational vehicles. Do your part to prevent the spread of this pest.

How To Recognize Gypsy Moth Life Stages

To inspect your outdoor articles, you need to be able to identify gypsy moth life stages. Most important is the egg mass.

The gypsy moth goes through four stages of development--egg, larva (caterpillar), pupa (cocoon), and adult (moth). It has one generation per year. During the summer, female moths attach egg masses to trees, stones, walls, logs, and other outdoor objects including outdoor household objects. Each egg mass contains up to 1,000 eggs and is covered with buff or yellowish "hairs" from the abdomen of the female. The velvety egg masses vary in size but average about 1.5 inches long and .75 inch wide (roughly between the size of a dime and a quarter).

In the Southern United States, eggs begin hatching in late March. Eggs start to hatch around early May in the northernmost United States. The grayish, hairy caterpillars are easy to identify when about half-grown by pairs of red and blue dots on their backs. Mature caterpillars are from 1.5 to 2.5 inches long.

Although they are voracious eaters, caterpillars stop feeding when they enter the pupal or cocoon stage, ranging from May in the Southern United States to early July in the Northern United States, varying with weather and climate. Adult moths emerge from the dark-brown pupal cases 10 to 14 days later. Males have light tan to brown wings marked with dark, wavy bands, and a 1.5-inch wingspread. Female moths are larger than males and generally white, with a wingspread of about 2.5 inches. Despite having larger wings, the female moths cannot fly.

Neither sex feeds in the moth stage; adults mate and lay eggs only. The eggs are the dormant stage of the life cycle, allowing the pest to survive winter weather. Egg-hatch the following spring starts the life cycle over again.

What To Do If You Find Gypsy Moth Life Stages

An effective way to dispose of gypsy moth life stages is to remove them by hand. Scrape egg masses from their locations with a putty knife, stiff brush, or similar handtool. Dispose of egg masses and other life stages in a container of hot water, household bleach, ammonia, or kerosene.

Gypsy moth hairs, found attached to all life stages, can cause people who are allergic to them to have skin rashes or respiratory reactions. If necessary, wear gloves, protective clothing, and a dust mask.

Additional Information

For more information about the Federal regulations on moving outdoor household articles, contact one of the following:

  • Your State or Province's regulatory officials, usually listed under department of agriculture, plant protection or regulatory division, in the State or Provincial government section of your telephone directory.
  • A U.S. Federal regulatory official, listed in the Federal Government section of your telephone directory under USDA, APHIS, Plant Protection and Quarantine. (If you have access to the Internet, point your browser to http://www.aphis.usda.gov/ppq and use the "Comments" link to send us an e-mail request for more information.)

Self-Inspection Checklist

Important: Make sure this checklist goes with your household goods when you move!

Checklist and Record of Your Self-Inspection

Date: _______________________

Place Inspected: _______________________


Recreational or Camping Items

____ Backpacks ____ Basketball backboards ____ Bicycles
____ Boats ____ Boat trailers ____ Campers
____ Ice chests ____ Motorcycles ____ Motor homes
____ Recreational vehicles ____ Snowmobiles ____ Sports equipment
____ Tarps ____ Tents ____Waders or boots

Household Items

____ Air conditioners ____ Barrels ____ Cardboard and wooden boxes
____ Clothesline poles ____ Clothespin bags ____ Empty plant containers
____ Firewood ____ Houseplants taken outside during the summer ____ Ladders
____ Outdoor doormats ____ Outdoor thermometers ____ Refrigerators
____ Sheets of plastic ____ Shutters ____ Storage sheds
____ Storm/screen doors and windows ____ Tanks for propane and oil ____ Television antennas
____ Trash cans ____ Washing machines ____ Water hoses
____ Weather vanes ____ Window awnings

Building Materials

____ Bricks ____ Cinder blocks ____ Cement-mixing tubs
____ Lumber ____ Roofing materials ____ Sewer pipes
____ Tools and toolboxes ____ Water pipes ____ Welding equipment
____ Workbenches

Yard and Garden Items

____ Animal houses (e.g., doghouses, rabbit hutches) ____ Barbecue grills ____ Birdbaths
____ Bird feeders ____ Bird houses ____ Bug lights
____ Carts ____ Coldframes ____ Driftwood
____ Fencing ____ Fertilizer spreaders ____ Flagpoles
____ Garden tillers ____ Garden tools ____ Lawnmowers
____ Mailboxes ____ Picnic tables ____ Porch or patio furniture
____ Signs and posts ____ Snowblowers ____ Storage sheds
____ Swimming pools ____ Trees and shrubs ____ Trellises
____ Wheelbarrows ____ Yard decorations

Children's Playthings

____ Bicycles, tricycles ____ Playhouses ____ Sandboxes
____ Sleds, toboggans ____ Swingsets ____ Tire swings
____ Wagons ____ Other outside toys like trucks, sand molds

Other Items

____ Car parts ____ Car ramps ____ Cars or trucks
____ Farm items ____ Plants Stored tires (snow tires)

Please inspect anything that was stored outside!

Signature: _____________________

The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD).

To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer.

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