Gulf Coast tick

Amblyomma maculatum

Photo by CDC: Gulf Coast Tick

This hard tick is found in coastal areas of the U.S. along the Atlantic coast and the Gulf of Mexico, extending inland to Kansas and Oklahoma. It transmits Rickettsia parkeri rickettsiosis, a form of spotted fever. Adult ticks have been associated with transmission of R. parkeri to humans. Larvae and nymphs feed on primarily on birds and small rodents, while adult ticks feed on deer and other wildlife. It is a known human biter.

Visit University of Rhode Island’s TickEncounter Resource Center for additional photos to help in the identification of ticks.

CDC Distribution Map 2019: This map provides general insight into the expected distribution of these human-biting ticks in the contiguous United States. Populations of ticks may be found outside noted areas. Naturally occurring populations of the Gulf Coast Tick are not known to occur in Alaska or Hawaii.