This looks very much like a blotch leafmine in Common Sorrel (Rumex acetosa). Can anyone identify the causer, please?
No identification made yet.
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there are three identical observations, which one should we write on?
latest pics and diptera videos
Jeremy, many thanks for pointing that out; I've no idea how it happened but the other two have now been deleted.
I think it happens if you press send more than once while you're posting something, as it can be quite slow to actually upload.
I don't know much about leaf-mines but I know that Agromyzidae are responsible for many of them. These small flies are often quite eye-catching
If these are mines then the most likely causer is one of the Pegomya species.
Lat/Lng: 55.4737, -3.2026
OS grid ref: NT240206