Galls caused by beech gall-midge, Mikiola fagi, on beech leaves. Pyrenees.

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Photo credit: © Bob Gibbons / Alamy / Afripics
License: Licensed
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Keywords: beech, beech-gall, beeches, beechwood, cecidomyiidae, fagi, fagus, foliage, gall, gall-fly, gall-forming, gall-midge, galls, gnats, leaf, midge, mikiola, sylvatica, tree, trees