Year Model years requiring a test. 2014 1990, 1992, 1994, 1997, 1999, 2001, 2003, 2005, 2007. 2015 1991, 1993, 1995, 1996, 1998, 2000, 2002, 2004, 2006, 2008. 2016 1992, 1994, 1997, 1999, 2001, 2003, 2005, 2007.
An important pest of livestock and horses throughout the western United States. In California, this tick is frequently found in the warm, dry regions of the central valley down to the southern portion of the state. Rarely, these ticks have been found on humans, dogs, cats, and sheep.
Two types of ticks carry the Lyme disease bacteria in the U.S. They are: 1  Deer ticks . They spread the disease in the Northeast and Midwest. 2  Western black-legged ticks . They spread the disease along the Pacific coast, mostly in northern California and Oregon.