Rhipicephalus

[rī′pĭ-sĕfə-ləs, rĭp′ĭ-]
n.
  1. A genus of ixodids including species that are vectors of various diseases in humans and domestic animals, such as Rocky Mountain spotted fever.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.