Dermacentor andersoni

[ăn′dər-sōnī′]
n.
  1. A tick that is the vector of Rocky Mountain spotted fever in the Rocky Mountains and also transmits tularemia and causes tick paralysis; the Rocky Mountain wood tick.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.