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Knopper gall with adult wasp and pupal

Knopper gall with adult wasp and pupal

Z345/0610

Rights Managed

50.2 MB (3.3 MB compressed)

5113 x 3433 pixels

43.2 x 29.0 cm ⏐ 17.0 x 11.4 in (300dpi)

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Credit

DR. JOHN BRACKENBURY / SCIENCE PHOTO LIBRARY DR. JOHN BRACKENBURY / SCIENCE PHOTO LIBRARY

Caption

Knopper gall, wasp and pupa. Cross-section through a knopper gall revealing an unhatched pupa of the wasp Andricus quercuscalis inside. On the left, outside the gall, is a newly hatched adult wasp. Knopper galls occur on acorns of the English oak, Quercus robur, however the wasps that hatch from these go on to lay eggs on the turkey oak, Quercus cerris, causing galls to occur on their catkins.

Release details

Model release not required. Property release not required.

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