acorn cup gall wasp, knopper gall (Andricus quercuscalicis), unripe galls at an oak leaf, Quercus robur, Germany
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Photo credit: © blickwinkel/Koenig / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., acorn, animal, animals, branch, branches, broad, central, cup, deciduous, europe, european, format, gall, galls, gallwasp, gallwasps, german, germany, horizontal, hymenopteran, hymenopterans, infection, infections, infestation, insect, insects, knopper, koenig, leaf, leaved, leaves, nature, oak, oaks, parasitism, pathogen, pathogens, pest, pests, plant, plants, quercus, robur, tree, trees, twig, twigs, unripe, wasp, woody