Abstract
Although Amblyomma sculptum (previously named Amblyomma cajennense) and Amblyomma aureolatum belong to the same genus and are important vectors of Rickettsia rickettsii, these species are distinct in relation to susceptibility to infection. A. aureolatum is more susceptible to infection than A. sculptum, providing more specimens of experimentally infected ticks. On the other hand, A. aure…