Tick Identification: North America

Tick Identification is extremely important for a number of reasons; the most important of which, is figuring out what pathogens a tick may carry (and transmit). While it’s typically much easier to identify an adult tick, immature ticks can also transmit diseases.

Of the 800+ species of ticks found throughout the world, only a few are known to bite and transmit disease to humans. There are nine are found in the United States. Naturally occurring populations of the ticks described on this website do not occur in Alaska, however, the brown dog tick is endemic to Hawaii.

If you don’t see exactly the tick you’re looking for, it might be a Tick Lookalike!
Check them all out on this page.


Click on a Tick to Learn More

American Dog Tick (Dermacentor variabilis)Blacklegged Deer Tick (Ixodes scapularis)Brown Dog Tick (Rhipicephalus sanguineus)Cayenne Tick (Amblyomma mixtum)East Asian Longhorned Tick (Haemaphysalis longicornis)Groundhog Tick (Ixodes cookei)Gulf Coast Tick (Amblyomma maculatum)Lone Star Tick (Amblyomma americanum)Pacific Coast Tick (Dermacentor occidentalis)Rocky Mountain Wood Tick (Dermacentor andersoni)Western Blacklegged Deer Tick (Ixodes pacificus)


Tick Identification Chart (Hi-Res)
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Tick ID CardsTick ID Cards

Common Tick Lookalikes

The Full Guide
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Find a Tick? Snap a Pic! FREE Tick Identification

Tick Identification: How To

Want to learn more about tick identification — like what to look for on a tick to help identify one tick species from another?

Check out our new How To ID a Tick page!