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Gall of a Gall Wasp or Gallfly (Cynipidae), on the leaf of an Elm tree (Ulmus), Upper Bavaria, Bavaria, Germany, Europe
Galls of the Gall Midge (Mikiola fagi) on leaves of Common Beech (Fagus sylvatica)
Gall of the Oriental Chestnut Gall Wasp or Asian Chestnust Gall Wasp -Dryocosmus kuriphilus-, Switzerland