An example of a thistle gall on a Creeping Thistle, Cirsium arvense, that is caused by the Thistle Gall Fly, Urophora cardui. Photographed in a studio

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An example of a thistle gall on a Creeping Thistle, Cirsium arvense, that is caused by the Thistle Gall Fly, Urophora cardui. Photographed in a studio. Dorset England UK GB

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Size: 3840px × 5760px
Photo credit: © www.pqpictures.co.uk / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., arvense, cardui, cirsium, creeping, fly, gall, galls, gb, parasite, parasitic, parasiting, parasitism, plant, thistle, uk, urophora