February, '16] [JOURNAL OF ECONOMIC ENTOMOLOGY 



Plate 9 



Potassium Cyanide Injections 



1, Coleus pierced but no KCN injected; 2, Cyanide injected and living Mealy 

 Bug; 3, Dark streak in apple caused by KCN; 4, Living Elm Borers after KCN 

 injection. 



