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Dermacentor variabilis

[vär′ē-ā′bə-lĭs]

n.

A tick that transmits tularemia and is the principal vector of Rocky Mountain spotted fever in the central and eastern US; the American dog tick.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.