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Rocky Mountain Wood Tick
Common Names: Rocky Mountain Wood tick
Formal Names: Dermacentor andersoni
Description: Looks like American Dog tick (Dermacentor variabilis – DV), and Gulf Coast tick (Amblyomma maculatum – AM). Mouthparts are shorter than AM. It is a more robust, husky tick with a rounded thicker body than both DV and AM.
Repellents: Permethrin clothing treatment kills ticks and deet-based skin repellent helps repel them.
Diseases: Rocky Mountain Spotted fever, Tularemia, Colorado Tick Fever and major cause of Tick Paralysis.
Left to Right: female, male
As the tick engorges the shield remains consistent in size and color although it tilts forward to a more vertical position.
Left to Right: unengorged female, 1/4 engorged, 1/2 engorged and fully engorged