Spangle Gall

This was found during our walk around the site the other day and the children wanted to know what it was.

The Wildlife Trust has this to say about it:-
The Spangle Gall is caused by a tiny gall wasp, Neuropterus quercusbaccarum, and can be found on the underside of oak leaves in early autumn. It is common and widespread, and a single leaf can host up to 100 galls, each containing a single larva. The galls fall to the ground and can be seen around oak trees during autumn; the larvae continue to develop through the winter, and emerging as adults in April.

It appears it can be found almost anywhere.

Also found today Silk Button Spangle Galls