KEY TO AMERICAN INSECT GALLS 



169 



An orange brown to light chocolate colored erineum on the lower surface of the 

 leaf, on V. b i c o 1 o r. Chadwick '08, p. 150 



Acarid. Eriophyes sp. 

 Small, semicircular or nearly circular, wart galls along the veins and but slightly 

 elevated, on either surface, diameter 2 mm, on V. c o r d i f o 1 i a. Chadwick 

 •08, p. 151 



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



Quite distinct from the above, with a long, white pubescence, on the under 



surface, diameter 5 to 10 mm, on V. c o r d i f o 1 i a. Chadwick '08, p. 151 



Acarid. Eriophyes sp. 



^ 



Fig. 175. A s t r o d i - 

 plosis speciosa Felt. 

 Shrunken gall. (Original) 



Fife. 176. Linden 

 bark gall, A g r o - 

 m y z a t i 1 i a e 

 Coud. (Original) 



Green, pouch gall with irregularly-lobed top and mostly on the under surface of 

 the leaf, on V. c o r d i f o 1 i a. Chadwick '08, p. 151 



Acarid. Eriophyes sp. 

 An erineum on the under side of the leaf, causing a swelling above, on 

 V. V i n i f e r a. Chadwick '08, p. 151 



Acarid. Eriophyes vitis Land. 

 A leaf curl or warty, greenish elevation on the upper surface of the leaf, entirely 

 smooth on the underside, becoming brown or reddish when old, on V 

 vinifera. Chadwick '08, p. 151 



Acarid. Eriophyes sp- 



