HYMENOPTERA OAK GALLS. 



153 



attached that, if not careful, our hop -like galls may be nothing else 

 but empty husks (fig. 149). 



Dryophanta Group. 



The galls of this group are always found on the under side of the 

 leaves, and in order that we may verify the galls in the forest, it may 



Fig. 14S. Gall of Andricus ramuli (cotton gall). 

 (Drawn by P. J. Brown.) 



Fig. 149. GaUs of Aphilothrix fecundatrix 



(artichoke gall). 



be better to confine ourselves to the group and not to the cycle 

 generation. 



Dryophanta scutellaris, Htg. (Adler). 

 Dryophanta folii, Mayr (Cameron). 



This is known by the graphic name of " cherry gall." It is compara- 

 tively large, about the size of a small cherry or marble, and always 

 springing from the veins of the leaves, more especially the midrib. It 

 is slightly attached to the vein. The colour varies from light-green 



