Oak marble gallsOak marbles are growths, or galls, produced by the tree in response to eggs laid by small 'gall-wasps' (hymenoptera). The gall protects the emerging grub and provides its first meal. The waps responsible for oak marbles is Andricus kollari.
Technical Information: Photographed with a Praktica MTL3.|
Copyright Richard Burkmar 2003. Permission is hereby granted for anyone to use this image for non-commercial purposes which are of benefit to the natural environment. School pupils, students, teachers and educators are invited to use and reproduce the image freely. The photographer should be credited where practicable. Use for commercial purposes is prohibited unless permission is obtained from the copyright holder.|
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