Acari: Eriophyoidea - gall mite Aceria nalepai (Eriophyes inangulis) Photographs on Alnus glutinosa, Common Alder Hosts: Alnus glutinosa, A.incana Pouch galls upperside in vein axils. May be in pairs or alternate

Aceria nalepai
Lytchett Minster, Dorset. August 2017