2 8 INSECT-GALLS OF THE VICINITY OF NEW YORK CITY 



59. Hickory Cone Gall {Cecidomyia sangiiinolenta Osten Sacken). — Conical, 

 somewhat narrowed at the base and of a blood red or purplish red color. In 

 numbers on the under surface of the leaves of hickory. Not common. 



60. Hickory Peach Gall {Cecidomyia persicoides Osten Sacken). — Variable 

 in shape, usually rounded and clothed with delicate down like that of a peach, 

 looking somewhat like a diminutive fruit of this kind. On the under surface 

 of the leaves of hickory. Common. 



61. Pine-Cone Willow Gall {Cecidomyia strobiloides Osten Sacken). — 

 Formed of closely imbricated leaves assuming the shape of a cone. On the 

 terminal twigs of different kinds of low willow. Common. 



