Rocky Mountain Wood Tick


Actual Size: 3.2 mm (un-engorged); 16.5mm (engorged)

Characteristics: Oval, flattened; Brown – becomes Grayish when engorged

Legs: 8

Antennae: No

Wings: No

Habitat: Lives in Rocky Mountain states; can be found outdoors in grasslands, trails, and wooded areas


  • Adults can live for over a year without feeding.
  • Adults are active during sunny days on the ground.
  • Larvae form has 6 legs – 8 when nymph and adult.

Rocky Mountain Wood Ticks in the Pacific Northwest

Rocky Mountain Wood Tick Habitat

Rocky Mountain Wood Tick Behaviors, Threats, or Dangers