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16.6 MB (1.1 MB compressed)
2956 x 1961 pixels
25.1 x 16.5 cm ⏐ 9.9 x 6.5 in (300dpi)
GEOFF KIDD / SCIENCE PHOTO LIBRARY GEOFF KIDD / SCIENCE PHOTO LIBRARY
Oak Marble Galls on Oak Tree caused by the gall wasp (Andriscus kollari). The smooth woody galls are caused by a single larva of the wasp feeding in an internal chamber.
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