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



Plate IX. 



Grapefruit as a Host of the Mediterranean Fruit Fly. 



Two types of infestation. Fig. 1.— Larvae have eaten out a portion of the fruit 

 while the rest remains unaffected. Fig. 2. — Infestation extending throughout 

 the pulp. Note that the rind shows evidence of infestation of the pulp only at 

 the decayed spot on the lower side. (Original.) 



