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What Does a Lone Star Tick Look Like?

A Lone Star tick is reddish-brown and rounded. The adult female has one clear white dot in the center of her back. Males have faint white streaks or spots around the edges instead. Younger stages are much smaller and harder to recognize.

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At a glance

  • Adult female: reddish-brown with a single bright white or silvery dot.
  • Adult male: smaller marks or streaks near the edge of the body.
  • Nymph: tiny (about the size of a poppy seed), pale, and easy to miss.
  • Engorged ticks look larger and grayish after feeding.

Size comparison

Unfed adults are about the size of a sesame seed, and nymphs are far smaller. After feeding, ticks swell a lot. Because nymphs are so small, daily tick checks are important during tick season.

Could it be a different tick?

Blacklegged (deer) ticks are smaller and darker, with no white dot. American dog ticks are larger, with mottled patterns. If you are not sure, save the tick and take a photo so it can be identified.

Common questions

Is the white dot always visible?

No. The single white dot is found only on the adult female. Males and young ticks don't have it, so a missing dot doesn't rule out a Lone Star tick.

How big is a Lone Star tick?

Unfed adults are about the size of a sesame seed. Nymphs are much smaller. Both swell a lot after feeding.

Sources

  1. 1.
    Where Ticks Live (opens in a new tab) · CDC

    The Lone Star tick is widely distributed in the Northeast, South, and Midwest U.S.

  2. 2.
    TickEncounter Resource Center (opens in a new tab) · University of Rhode Island

    Tick identification, prevention, and reporting resources.

This guide is here to help you learn. It is not medical advice. If you have symptoms or questions, see a doctor. If someone has trouble breathing or a severe allergic reaction, call 911. Read our sources and disclaimer.