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Photo#304201
Evidence on the top of the beech leaf of eriophyid mites on the underside of the leaf. - Acalitus ferrugineum

Evidence on the top of the beech leaf of eriophyid mites on the underside of the leaf. - Acalitus ferrugineum
Cary, Hemlock Bluffs Nature Preserve, bottomlands by Swift Creek, Wake County, North Carolina, USA
May 15, 2009
This is the upper side of the same leaf of an American Beech tree, Fagus grandifolia. The leaf shows erineum patches caused by eriophyid mites of the species Aceria ferruginea. Identified by Charley Eiseman. Thanks, Charley!

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Beech, Fagus grandifolia, leaf underside, with  eriophyid mites. - Acalitus ferrugineum Evidence on the top of the beech leaf of eriophyid mites on the underside of the leaf. - Acalitus ferrugineum