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Longhorned (and Other) Ticks In New Jersey


Several species of ticks are found in New Jersey. In addition to being an unwelcome parasite on people, pets and wildlife, ticks can also transmit certain diseases such as Lyme Disease and Rocky Mountain Spotted Fever. Those enjoying the outdoors, including hunters, anglers, birders and others, should take precautions to avoid ticks and tick-borne diseases, and to prevent the transfer of ticks to new sites.

Asian Longhorned Tick

In late 2017, the Asian Longhorned Tick (Haemaphysalis longicornis), was found on a sheep in Hunterdon County. As of May 2020, the Longhorned Tick has been found in six NJ counties (Hunterdon, Union, Middlesex, Mercer, Bergen, Somerset, Passaic, Camden and Monmouth)and in twelve other states. The tick is known to occur in humans and a wide range of animals, being documented in deer, sheep, goats, cattle, horses, dogs, raccoons, and opossums in North America. If animals become heavily infested with these ticks, the loss of blood can kill the animal. Ticks can also spread a variety of diseases.

The tick is known to occur in humans and a wide range of animals, such as deer, sheep, goats, cattle, horses, dogs, raccoons, and opossums in North America. If animals become heavily infested with these ticks, the loss of blood can kill the animal. In some countries, the Asian Longhorned Tick has been known to spread a variety of diseases. Currently, in the U.S., it has only been shown to experimentally become infected with Rickettsia rickettsia.

These exotic ticks are being collected to document their range and to test them for disease. Tick-borne diseases, including those from ticks native to the region, pose a hazard to both hunters and their dogs, as well as other outdoors enthusiasts. In addition to the risk of having the tick attach, human traffic can move the tick from one location to another. This may include hunters, birders and others who often walk through wooded areas, grasses, and shrubs. Transport of hunter-killed animals can pose risks to increasing the range of this tick from one region to another.

If you find a suspected Asian Longhorned Tick on you, your pets, horses, livestock, or hunter-harvested deer, please collect the tick for animal health officials to identify:

  • Place the tick in a snack or sandwich size Ziploc baggie with a postage stamp sized piece of moistened paper towel and seal it. Do NOT use tape to secure the tick. Keep refrigerated until submission.
  • Call the New Jersey Tick Line at: 1-833-NEW-TICK (833-639-8425) or head to your local county drop off location for submission.
  • For additional information, visit the NJ Dept. of Agriculture, Division of Animal Health webpage at


The following guidelines are recommended to avoid tick-borne diseases and to prevent the transfer of ticks to new sites:

Use Tick Repellent

  • Apply tick repellents to exposed skin and clothing - see Preventing Tick Bites (Centers for Disease Control and Prevention). Always read the label before using.
  • If skin becomes wet from sweat or water, towel off and reapply the repellent to dry skin.
Clothing and Footwear
  • Spray permethrin-containing products on outer clothing, including shoes. Permethrin should NOT be used directly on skin. It is important to follow the directions on the product. If chemical odors are a concern, there are unscented and neutral odor products available. Also available are clothes that have insecticide embedded in the fibers and may last through multiple washes.
  • Check clothing and exposed body prior to moving from one area to another. If ticks are located they may be submitted for identification. See above for submission guidance.
  • Avoid wearing the same clothes on consecutive days without washing them first to remove ticks. Wash clothes immediately after returning home. To kill any ticks that may be on clothes it is recommended to use hot water and dry on high heat.
Cover up
  • Wear light colored long-sleeved shirts and long pants.
Perform Tick Checks
  • Conduct body checks immediately after returning from outdoor activities in tick-infested areas. Use mirrors if necessary, but check all body areas and remove all ticks found. Especially examine behind the ears, back of the neck, around the waist, and in and along the hairline. Shower as soon as possible to potentially wash away unattached ticks.
Click images to enlarge.
Images of NJ ticks
Comparison of deer tick and longhorned tick
Enlarged image of Deer Ticks (top) and the Longhorned Ticks (bottom) compared to poppy seeds (middle).
Removing Attached Ticks Safely

  • Remove attached ticks by using fine-tipped tweezers. If tweezers are not readily available, you can improvise by shielding your fingers with tissue paper, a foil-covered gum wrapper, or plastic sandwich bag and grasping the tick as close to the skin as possible, pulling upward with steady, even pressure.
  • Do not twist the tick as you remove it - this may cause the tick's mouthparts to remain in the skin, increasing the risk of infection.
  • Do not attempt to suffocate the tick with alcohol-soaked cotton - this will cause the tick to regurgitate while its mouthparts are still in the skin, and can increase the risk of infection.
  • Wash the affected area with soap and water, and disinfect the bite site.
Protecting Hunting Dogs
Consult a veterinarian, but basic guidelines include:
  • Apply topical or systemic tick-control treatments. Consult your veterinarian about the appropriate product for your dog.
  • Treat kennels as needed to kill ticks. Consult your veterinarian about the safest and most appropriate alternative.
  • Any ticks attached to dogs should be promptly and carefully removed, using the same guidelines as posted above for tick removal from human skin.
Avoid Spreading Ticks by Movement of Hunter-killed Deer
  • Ticks are most active in warm weather, thus the highest risk of moving ticks is during warmer temperatures in September and October of the hunting season.
  • After shooting a deer within or near an area known to have the Asian Longhorned tickc, if you suspect that the deer has this tick present, contact Dr. Nicole Lewis at 908-735-6398 or to coordinate collection of these ticks.
  • After moving the deer, do not let it lay in your yard as ticks may detach and leave the deer.
  • Have the deer butchered promptly OR if processing the deer yourself, remove the hide and store it to prevent ticks from getting into the environment. If saving the hide, freeze for a minimum of two days; if not, double-bag it and dispose with your municipal waste.

* Source: American Veterinary Medical Association

Other Resources

New Jersey Department of Health:
  How to Avoid Tick Bites
  How to Remove a Tick
  Tick-borne Diseases
Rutgers Center for Vector Biology
The tick that binds us all: Review of the biology and ecology of Haemaphysalis longicornis
Rhode Island Tick Encounter

Ticks of New Jersey (pdf, 180kb)

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Last Updated: May 18, 2020