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 larvae have fallen to the ground. 

 (Original.) 



