Bui. 233, U. S. Dept of Agriculture. 



Plate I. 



Fig. 1.— Habitat of the Wild Cotton Weevil and Its Host Plant. 



Basin of the Milagroso Canyon in the Santa Catalina Mountains, Ariz. This is an ideal lo- 

 cation for Thurbcria thespesioides, the wild host plant of Anthonomus grandis var. thurberix. 

 Two large plants may be seen near the right-hand margin of the photograph. (Original.) 



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 Plate II, figure 1. (Original.) 



