Return to Rocky Mountain Spotted Fever Pictures from CDC | Hardin MD : Rocky Mountain Spotted Fever (Many more pictures)
Enlarged view of mouth parts of an American Dog Tick, Dermacentor variabilis, magnified 779x. Ticks are of the class Arachnida, as are spiders and mites. D. variabilis is a known carrier of Rocky Mountain Spotted Fever caused by the bacterium Rickettsia rickettsii.
Photo Credit: Janice Carr
Picture & text from CDC/PHIL. For more information see Rocky Mountain Spotted Fever Pictures from CDC