A leafmine in a leaf of Goat Willow (Salix caprea). Can anyone identify the culprit, please?
No identification made yet.
No interactions present.
I don't think this is a mine - it is grazed epidermis.
On reflection, I think I agree with you. That limits the culprits to a small group of slugs and snails but I don't think there is any chance of narrowing it down any further.
Lat/Lng: 55.4737, -3.2026
OS grid ref: NT240206