Black Legged Tick

Actual Size: 3.6 mm to 5 mm

Characteristics: Oval; brown to reddish-brown with white-gray markings.

Legs: 8

Antennae: No

Wings: No

Habitat: Prefers wooded areas, clinging to tall grass, brush, and shrubs. May be carried into homes on pets or clothing.


  • Also known as the deer tick.
  • The highest risk of being bitten occurs during spring, summer, and fall.
  • Can transmit Lyme Disease, the most common vector-borne disease in the U.S.

Blacklegged Ticks in Las Vegas

Blacklegged ticks, also known as deer ticks, are the primary carrier of Lyme disease in the United States. Widely distributed across the eastern U.S., they are predominantly found in humid, deciduous forests. Their distribution relies greatly on the distribution of their reproductive host, the white-tailed deer. Both nymph and adult stages of these ticks transmit diseases such as Lyme disease, Babesiosis, and Anaplasmosis. In 2018, there were approximately 23,558 confirmed cases of Lyme disease, making it the most common vector-borne disease in the United States.

Blacklegged Tick Habitat

Blacklegged ticks live in shady, moist areas at ground level, clinging to tall grass, brush and shrubs, usually no more than 18-24 inches off the ground. Ticks also live in lawns and gardens, especially at the edges of woods and around old stone walls. Blacklegged ticks are not found out in the middle of your lawn, preferring yards that border wooded areas. Ticks also live in ornamental plantings and gardens, or any environment that offers available shade, and high humidity.

Blacklegged Tick Behaviors, Threats or Dangers

Blacklegged ticks bite and the greatest risk of being bitten occurs during spring, summer, and fall. However, adult ticks may be out searching for a host any time winter temperatures are above freezing. Stages most likely to bite humans are nymphs and adult females. To avoid being bitten, apply an insect repellent containing an EPA-registered ingredient, such as DEET. Also, consider wearing long-sleeved shirts and pants, preferably light-colored so ticks will be easy to detect, and tuck pants into socks. If you are dealing with blacklegged ticks, it’s important to always enlist the help of a professional tick & mite control expert.