Hard Ticks: Genus Rhipicephalus

General Characteristics: These ticks have a hexagonal basis capituli, eyes on the scutum and festoons on the posterior margin of the abdomen. Male specimens are distinguished from most other common ticks by the adanal plates and accessory plates on either side of the anus.

Where Found: Many species occur in Africa & Asia where they are important vectors of disease to man and animals.


Brown Dog Tick, Rhipicephalus sanguineus,

Where Found: In most of the United States.

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Markings: It is a reddish-brown species that attacks dogs and other mammals but rarely man.

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Diseases Commonly Carried: It is not known to transmit human diseases in the United States, although it is a known vector of Marseilles fever in the Mediterranean region.

Common Hosts: The ticks are frequently found attached to the ears and in between the toes of dogs. This species is one of the most common in homes, where it feeds on dogs and then drops off the infested animal. The engorged female specimens, sometimes about a 13 mm long, are particularly noticeable as they crawl on walls or around baseboards and cracks, looking for protected areas in which to deposit 1,000 to 3,000 eggs. The life cycle of this species can be completed in less than two months. In the southern United States this species occurs in buildings, kennels and small animal hospitals, and outdoors in yards. In the North, this tick is rarely found outdoors. It is a very difficult and important species to control.

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