Free Stock Photo: This photograph depicts a dorsal view of a female cayenne tick, Amblyomma cajennense. This tick specie is a known North, Central and South American vector of Rickettsia rickettsii, which is the etiologic agent of Rocky Mountain spotted fever (RMSF). Note the small scutum, or \'shield\', which unlike its male counterpart, covers only a small region of this specimen\'s dorsal abdomen, just caudad to it head, and elongated mouthparts.
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