104 LIFE HISTORY OF NORTH AMERICAN TICKS. : 
GEOGRAPHICAL DISTRIBUTION. 
(Fig. 6.) 
This species is probably the most widely distributed of all the 
ticks, at least of the ixodid ticks, even though largely limited to the 
Fic. 6.—The brown dog tick, Rhipicephalus sanguineus: Distribution in the United States. The large 
dot; show loc.lities where the species has been collected in our investigation. The small dots indicat 
the probable distribution of the species. (Original.) 
Tropical and Subtropical regions. Portugal is the type locality of the 
species. In Europe it is also recorded from France, Italy, Sicily, 
Corsica, and Roumania; in Africa from Egypt, Algeria, Tunis, Nubia, 
Abyssinia, Zanzibar, German East Africa, Portuguese East Africa, 
