Amblyomma maculatum Koch (Gulf Coast tick) has been reported throughout the southeastern United States, California, and Arizona (Goddard & Norment 1983) and on various animals including cattle, deer, mesocarnivores, and ground dwelling birds (Tugwell & Lancaster 1962). The tick is a pest of economic and pathogenic concern since it readily infests cattle (Semtner & Hair 1973), and is the vector of Cowdria ruminantium Cowdry (the causative agent of Heartwater disease) (Uilenburg 1982) and Rickettsia parkeri (the causative agent of newly described spotted fever) (Paddock et al. 2004). Previous confirmations of R. parkeri in A maculatum included specimens from Georgia, Florida, Kentucky, Mississippi, and South Carolina (Sumner et al. 2007). Amblyomma maculatum was initially thought to reside within 160 km of the Atlantic and Gulf Coasts (Bishop & Hixson 1936), but it has been found in 18 eastern counties of Oklahoma (Semtner & Hair 1973) and in Washington County and Ashley County in northwest Arkansas (Lancaster 1973). It may have become redistributed with livestock movement (Goddard & Norment 1983) and cattle egrets migration (USDA APHIS 2008). As a part of a larger study, investigating ticks on canines and deer (Trout & Steelman in press), veterinarians and the Arkansas Game and Fish Commission removed ticks from hosts and stored