50 



NEW YORK STATE MUSEUM 



Leaves or parts of leaves thickly corrugated by approximate, lobulate, intervenal 

 swellings. Fig. 49. Felt '06, p. 645 



Hemip. Spiny witch hazel gall. Hamamelistes spinosus 



Shim. 

 Pocket galls, chiefly on the upper side of the leaf, often confluent. Chad. '08, 

 p. 129 



Acarid. E r i o p h y e s sp. 

 Nodular pocket gall occurring on both leaf surfaces, yellowish or reddish to 

 purplish, onB. papyrifera. Chad. '08, p. 129 



Acarid. Eriophyes sp. 



A crimson red erineum turning to ochreous in straight, beady lines midway 



between the ribs or closely bordering them, on B. 1 e n t a. Chad. '08, p. 128 



Acarid. Eriophyes sp. 



Fig. 50. Alder bud gall, D a s y- 

 neura serrulat aje O. S. (Origi- 

 nal) 



Fig. 51. Chestnut bud gall, 

 Rhopalomyia casta- 

 n e a e Felt. (Original) 



A rosy pink erineum in large patches on upper leaf surface, on B. 1 e n t a. 

 Chad. '08, p. 128 



Acarid. Eriophyes sp. 

 Small, irregular, mostly elongate, red, crummy leaf patches on B. alb a, 

 B. nigra. Chad. '08, p. 128 



Acarid. Eriophyes sp. 

 Yellowish white to brownish erineum, forming large patches on the under surface 

 of the leaf, on B. papyrifera. Chad. '08, p. 129 



Acarid. Eriophyes sp. 

 A bright rusty erineum lining dimples on the under side of the leaf, dark brown 

 or brick red when dry, on B. p o p u 1 i f o 1 i a. Chad. '08, p. 129 



Acarid. Eriophyes sp. 



