acorn cup gall wasp, knopper gall (Andricus quercuscalicis), unripe galls at an oak leaf, Quercus robur, Germany

---

Size: 5439px × 3568px
Photo credit: © blickwinkel/Koenig / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., acorn, animal, animals, branch, branches, central, cup, 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