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Project Noah Nature School
Spotted on Nov 28, 2014
Submitted on Nov 30, 2014
2 Comments
Thank you John, I will update the desciption
Not snail - these leaves are being attacked by a leafminer. Probably an agromyzid fly if they are herbaceous, or some type of small moth if they are woody.
Google "leafminer damage" and have a look at the images.