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Gall of Urophora cardui?

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

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

Species interactions

No interactions present.

Species with which Urophora cardui interacts