lone star tick 'lōn-'stär- n an ixodid tick of the genus Amblyomma (A. americanum) of the southern, central, and eastern U.S. that attacks mammals and birds, is a vector of several diseases (as Rocky Mountain spotted fever and ehrlichiosis), and in which the adult female has a single white spot on the back
* * *
Amblyomma americanum.Medical dictionary. 2011.