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.) 



