Bui. 536, U. S. Dept. of Agriculture. 



Plate VII. 



Host Fruits of the Mediterranean Fruit Fly. 



Fig. 1.— Carissa arduina. Typical of a class of fruits which are protected from infestation until 

 they are practically ripe by a copious flow of white sticky sap from punctures in the skin made 

 by the adult fly. Note this dried white sap covering punctures on fruits. Fig. 2. — Bartlett 

 pear (Pyrus sp.). Fruit-fly larvae may eat out the entire center of a pear and yet the fruit 

 may remain attached to the tree and shrivel up after the larva3 have fallen to the ground. 

 (Original.) 



