Bui. 344, U. S. Dept. of Agriculture. 



Plate I. 



Fig. 1.— Dispersion of the Wild Cotton Weevil. 



Typical location of Thurberia plant, below rock, in Agua Caliente Arroyo, Ariz., about 

 114 miles from the mouth of the canyon. (Author's illustration.) 



Fig. 2.— The Wild Cotton Weevil and Its Host Plant in the Lower Ranges. 



Habitat of Thurberia thespesioides and the wild cotton weevil in the lower ranges. This view 

 was taken in the Agua Caliente Arroyo, Ariz., about 100 yards below the plant shown in 

 figure 1. (Author's illustration.) 



THURBERIA THESPESIOIDES, THE FOOD PLANT OF THE ARIZONA 

 WILD COTTON WEEVIL, ANTHONOMUS GRANDIS VAR. THURBERI^E. 



