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



Plate XX. 



FIG.1.-OPIUS HUMILIS: ADULT FEMALE. GREATLY ENLARGED. (ORIGINAL.) 



FIG. 2.-PACHYCREPOIDEUS DUBIUS: ADULT FEMALE. GREATLY ENLARGED. (ORIGINAL.) 

 PARASITES OF THE MEDITERRANEAN FRUIT FLY. 



