Oak spangal gall. Coloured scanning electron micrograph of a \silk button\" oak spangal gall on the surface of an oak leaf. This is a growth commonly

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Oak spangal gall. Coloured scanning electron micrograph of a \silk button\" oak spangal gall on the surface of an oak leaf. This is a growth commonly found on oak leaves, and is produced by the gall wasp Neuroterus numismalis. The wasp lays an egg on the oak leaf. It hatches and the developing larva produces substances which stimulate tumorous growth in the surrounding plant tissue. The mass of tissue, called a gall (circle), provides the larva with a food supply and protection from predators. Galls are also produced by bacteria, fungi or mites. Magnification: x39 at 6x7cm size. Magnification; x140 at 10 x 8\" size."

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Size: 4650px × 3762px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: botany, button, disease, diseases, gall, leaf, nature, neuroterus, numismalis, oak, pathogens, pathology, pest, pests, plant, silk, spangal, wasp