KEY TO AMERICAN INSECT GALLS 



lOl 



Same as above, predaceous. Felt 'i3h, p. 213 



Itonid. Lestodiplosis sp. 

 Irregular twig swellings resembling those on willow and poplar made by 

 Saperda concolor 



Coleopt. Maple twig gall, Xylotrechus aceris Fisher 

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

 10 cm. Felt '06b, 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 '11, p. 478 



Itonid. Gouty vein gall, Dasyneura 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 ocellaris O. S. 

 Irregular leaf folds. Felt 'i5e, p. 94 



Itonid. Rhabdophaga rileyana Felt 

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

 Felt 'i ij, p. 452 



Itonid. Dasyneura sp 



