bobthebirder's picture

Oak

Observed: 15th June 2013 By: bobthebirderbobthebirder’s reputation in Plantsbobthebirder’s reputation in Plantsbobthebirder’s reputation in Plantsbobthebirder’s reputation in Plants
DSCN6528
Description:

Photo taken at the 2013 Havering bioblitz

Identifications
Species interactions

No interactions present.

Species with which Pedunculate Oak (Quercus robur) interacts

Comments

petershirley's picture

The gall shown here

This is the sexual generation gall of Biorhiza pallida, the one correctly called the 'oak apple'. Each gall contains dozens of either male or female larvae (not both in any one gall) together with, no doubt, their parasitoids and 'lodgers' properly known as inquilines.

Peter Shirley