Plant Mite Galls 



1 Alder leaf galls produced by a plant mite, Eriophyes sp. (After 



Thompson) 



2 Bud galls on yellow birch produced by a plant mite, Eriophyes sp. 



3 Foliage deformed by ash Psyllid, Psyllopsis fraxinicola Forst. 



(Author's illustration) 



4 Hickory leaves with margins inrolled by Eriophyes sp. (After 



Thompson) 



5 Hazel or Corylus buds deformed by Eriophyes sp. (After Thompson) 



6 Bayberry leaves badly deformed by Eriophyes sp. (After Thompson) 



7 Beech leaves affected by Eriophyes sp. (After Thompson) 



8 Ash leaves showing numerous galls of Eriophyes fraxini Garm. 



(After Thompson) 



9 Ash flower gall, Eriophyes fraxiniflorae Felt. (After Thompson) 



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