janetav's picture

Gall of Urophora cardui?

Observed: 2nd September 2012 By: janetavjanetav’s reputation in Invertebratesjanetav’s reputation in Invertebrates
Thistle gall
Description:

This gall was on a thistle plant and was was just over an inch across. Seen at RSPB Sandwell Valley.

Identifications
Species interactions

No interactions present.

Species with which Urophora cardui interacts