Rocky Mountain Wood Tick

(Dermacentor andersoni)

The Rocky Mountain Wood tick (Dermacentor andersoni) has a similar appearance to the American dog tick but can be distinguished by its bright red, tear drop shaped body. Females will have a white colored shield and males will have gray and white spots on their body. They are primarily located in the Rocky Mountain States of Nebraska, South Dakota, Arizona, New Mexico, and California. Lower elevations will typically lead to high population densities.

The Tick Research Lab of Pennsylvania is able to detect the most common tick-borne diseases in any of these species. Our tick DNA tests are over 99.9% accurate.





Associated Diseases

Colorado tick fever

Spread by the Rocky Mountain wood tick, Colorado tick fever causes flu-like symptoms... Learn More

Rocky mountain spotted fever

Rocky Mountain spotted fever is caused by the bacterium Rickettsia rickettsii... Learn More


Tularemia is a potentially fatal bacterial infection that responds to early ...Learn More