34 



NEW YORK STATE MUSEUM 



Subspherical, pealike, hollow, pale yellowish green gall on under side of leaf, 

 usually on a side vein, diameter 5 to 7 mm. Fig. 32, pi. 3, fig. 9. Felt 

 '06b, p. 637 



Hym. Willow pea gall, Pontania pisum Walsh 

 Rounded or ovate, fleshy, yellowish green, usually rosy-cheeked gall, projecting 

 shghtly on the upper surface, diameter 12 mm. Fig. 33. Felt 'o6b, p. 636 



Hym. Willow apple gall, Pontania pomum Walsh 



D, 



Fig. 38. R h[a b d o - 



hja g a c'o ,r n^u t a 

 ./alsh. Swollen twig 

 and one in section show- 

 ing galleries. (Original) 



^. 



Very similar gall, prominent on both surfaces of the leaf, on S. p e t i o 1 a r i s. 

 Cosens, '17, p. 18 



Hym. Pontania petiolaris Rohw. 

 Fusiform, mid vein swelling, length 3 mm, diameter .75 mm. Cosens in lift. 



Hym. ? Euura sp. 



Twig galls 



Reared from twigs, gall unrecognized. Felt '076, p. 297 



Itonid. Asphondylia salictaria Felt 

 Larvae in subcortical cells; no swelling. Felt 'i5e, p. 168 



Itonid. Dasyneura corticis Felt 



