KEY TO AMERICAN INSECT GALLS 



lOl 



Same as above, predaceous. Felt 'i^h, p. 213 



Itonid. Lestodiplosis sp. 

 Irregular twig swellings resembling those on willow and poplar made by 

 Saperda concolor 



Coleopt. Maple twig gall, X y 1 o t r c c h u s a c e r i s Fisher 

 Irregular, oval, roughened branch swellings, length 10 to 15 cm, diameter 6 to 

 10 cm. Felt '06I:), p. 56 



Lepid. Maple sesian, Sesia acerni Clem. 

 Pustular areas in the smooth bark of red maple. Hodgk. '13, p. 420 



Acarid. Anthocoptes transitionalis Hodgk. 



Fig. 168. Maple leaf spot, Cecidomyia 

 o c e 1 1 a r i s O. S. (Original) 



Pouch vein galls, greenish or reddish, length 6 mm. Fig. 166. Felt 'i i, p. 478 



Itonid. Gouty vein gall, D a s y n e u r a communis Felt 



Small bladder like leaf galls, diameter 2.5 mm. Fig. 167, Chadwick '08, p. 120 



Acarid. Maple bladder gall, PPhyllocoptes quadripes Shim. 



Ocellate, yellow, red-margined blister leaf gall, diameter 3 to 4 mm. Fig. 168. 



Osten Sacken '62, p. 199 



Itonid. Maple leaf spot, Cecidomyia o c e 1 1 a r i s O. S. 

 Irregular leaf folds. Felt 'i5e, p. 94 



Itonid. Rhabdophaga rileyana Felt 

 Distorted, rolled leaves bearing cocoons, possibly identical with the preceding. 

 Felt 'iij, p. 452 



Itonid. D a s'y n e u r a sp 



