A gall-fly much magnified. 



Galls made by a cynipid gall-fly, 

 natural size. 



Ovipositor of a gall-fly, dorsal and lateral views. The long spine is the 

 organ used to pierce the leaf or twig. This and above figures are from Kellogg's 

 American Insects," by courtesy of Henry Holt & Co., New York 



[no] 



