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Gall  Oak Apple Gall

Oak Apple Gall - Photo  Copyright 2006 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

These are seen between May and June. They are home to the larvae of the oak apple gall wasp (Biorhiza pallida). The female lays her eggs in the leaf bud causing the oak tree to produce this apple-like growth.

Click for a better viewThe gall itself is about 4cms in diameter, and inside there are around thirty chambers each containing one wasp larvae. If you cut an old one in half you can see the tunnels where the larvae chewed their way out.

The 29th of May is traditionally 'Oak Apple Day' in Britain, which celebrates Charles II's return to England in May 1660.

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