The larva of the Cynipid gall wasp produces a spindle-shaped gall (actually more like a slender cowry shell), attached to a twig, petiole or midrib, often several in a row. The gall is up to 3 mm long, hard, shiny, sometimes with a few length ridges, green at first becoming reddish brown and spotted, or brown later.
Found on Turkey Oak.
When Turkey Oak is in leaf.
Not well recorded in Britain.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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