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Gall  Marble Gall

Marble Gall - Photo  Copyright 2000 G. Bradley
Photo: G. Bradley

UK Safari Tip:
To help you identify the most frequently found galls there's a fully illustrated fold out chart in the Nature Shop - click here

Marble galls are sometimes called oak nuts. They are the product of the gall wasp Andricus kollari.

Originally these wasps were introduced from the Middle East in the 1800's. The galls contain large amounts of tannic acid, which was used for making ink.

The wasp leaves the gall in Autumn, and you can see the small round hole where it made its exit.

Track Down More Info

UK Safari Galls Section
UK Safari Plants and Trees Section
UK Safari Creepy-Crawlies Section

  2006 G. Bradley. All Rights Reserved