Thistle gall caused by the fly Urophora cardui, on a creeping thistle Cirsium arvense, Dorset UK, black background

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Photo credit: © www.pqpictures.co.uk / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arvense, background, black, cardui, caused, cirsium, creeping, flies, fly, gall, galls, plant, thistle, urophora