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Knopper Gall on acorn of Pedunculate Oak Quercus robur, caused by tiny wasp Andriscus quercuscalicis. The introduced Turkey Oak Quercus cerris is need to complete the life cycle of the wasp.
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133297
Knopper Gall on acorn of Pedunculate Oak Quercus robur, caused by tiny wasp Andriscus quercuscalicis. The introduced Turkey Oak Quercus cerris is need to complete the life cycle of the wasp.

Filename: 133297.jpg
Size: 2466x3543 / 5.5MB
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Date: 3 Jul 2013
Location:
Credit: PAUL STERRY/NPL
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Model Release: No
Property Release: No
Restrictions: Nature Photographers Ltd., West Wit, New Road, Little London, Tadley, Hampshire, RG26 5EU. Tel: +44(0)1256 850661 web: www.naturephotographers.co.uk
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