KEY TO AMERICAN INSECT GALLS 



95 



Subglobose, monothalamous, yellowish white, hairy vein gall, diameter 4 to 

 ID mm. Wash. Trotter '11, p. 106 



Cynipid. P h i 1 o n i x sp. 



(9) Solid galls attached to the leaf and with a central, harder kernel or larval cell. These approach 

 the oak apple gall in structure 



Globular, grayish, pubescent, monothalamous, thin-shelled leaf gall, pithy 

 internally, diameter 7.5 to 8 mm, on the under surface, on Q. p 1 a t a n o i d e s. 

 Beutm. 'ogd, p. 252 



Cynipid. Philonix lanaeglobuli Ashm. 



Fig. 90. Large oak apple, 

 Amphibolips confluens 

 Harr. (Original) 



Fig. 91- Larger 

 empty oak apple, Am- 

 phibolips inanis 

 O. S. (Original) 



Globular, below brownish, the size of a pea or slightly larger, two to ten on the 

 under side of the leaf, within a dense, yellowish brown, spongy mass; diameter 

 3.75 to 6 mm, on Q. v i r e n s. Ashm. '81, p. X 



Cynipid. Andricus virens Ashm. 



(10) Oak apples, i. e. galls with a central, hard kernel or larval cell, a firm (often hard) outer shell 

 and a spongy or fibrous intervening substance 

 (a) Intervening substance is spongy 

 [i] Size large 

 Globular, smooth, shining or opaque leaf gall, internally a juicy, white, spongy 

 substance and a large central larval cell, green, turning with age to light 

 brown, diameter 2.5 to 5 cm, usually on a vein or petiole, on Q. rubra, 

 Q. coccinea and Q. velutina in May and June. Fig. 90, 92, 

 1-2. Beutm. '09b, p. 50 



Cynipid. Large oak apple, Amphibolips confluens Harr. 

 Spherical oak apple, dirty yellow, with wine-red stripes, diameter 1 to 2 cm, 

 resembles A. confluens. Mex. Trotter '11, p. 129 



Cynipid. ? A m p h i b o 1 i p s sp. 



