1910 THE EEPORT OF THE ENTOMOLOGICAL SOCIETY. 



103 



Host — Alder. 



Eriophyes sp. A white, frost-like erineum on under side of leaf in the axils 

 of the veins. Trichomes dense, pellucid. (Fig. 31.) Alnus incana. T. D. J., 

 Guelph. 



Eriophyes sp. A small, red or green pubescent pocket gall on leaf. Alder 

 Pocket Gall. (Fig. 34.) Alnus incana. T. D. J., Guelph. 



Host — Ash. 



Eriophyes fraxini (Garman). Small, irregular, smooth, more or less spherical 

 capsule gall, protruding on both sides of the leaf. Ash Mite Gall. (Fig. 33.) 

 Fraxinus americana. T. D. J., Guelph. 



Eriophyes sp. Pinkish-white, elongated capsule galls on the veins of the leaf. 

 Ventrally the galls appear as white, hairy projections following the veins. Ash 

 Vein Gall. T. D. J., Guelph. 



Eriophyes sp. A deformation of the terminal buds, tlieir development arrested, 

 producing a mass of small twisted leaf ends. Fraxinus americana. (Fig. 37.) 

 T. D. J., Guelph. 



Fig. 83. Dimple Gall and section of interior FiG. '34. Pocket Gall : Upper surface of leaf ; 

 greatly magnified. interior of gall, much magnified. 



Eriophyes sp. Leaves dwarfed and distorted in a bundle. Resembles some- 

 what Cecidomyia solidaginis. Ash Bunch Gall. Fraxinus americana. T. D. J., 

 Guelph. 



Eriophyes sp. Small, irregular, more or less spherical capsule gall, protruding 

 on both sides of leaf. Galls hairy. Fraxinus pubescens. T. D. J., Guelph. 



Host — Basswood. 



Eriophyes ahnormis, Garman. Balloon-shaped galls on the upper surface of 

 the leaf. Apex of gall usually serrated. Basswood Balloon Gall. Tilia americana. 

 T. D. J., Guelph. 



Eriophyes sp. Irregular, circular, dark reddish-brown spots 4-5 mm. in 

 diameter, having in their centre very characteristic tufts of whitish hairs. Bass- 

 wood Tufted Gall. Tilia americana. T. D. J., Guelph. 



