VOL.21 No. 28 



F^1 



^ 7/'3 July 9, 1971 



^"*^^ 



^\. 



oopetature 



ECONOMIC INSEC 



JUL 141971 I 



PLANT PROTECTION DIVISION '''^ 

 AGRICULTURAL RESEARCH SERVICE 



UNITED STATES DEPARTMENT OF AGRICULTURE 



y 



•h. 





/tf^' 



^ y.: 



