Garden Pests and Diseases: What's wrong with this vine ?, 1 by bonitin

bonitin wrote:
My neighbour would like to know what's wrong with his vine.
It's a vine which is grown for its leaves, He's Turkish and they use the leaves in the cooking, the grapes themselves are not eatable. He has no idea of its ID, but it is one that is commonly grown in Turkey.
The young leaves are showing like some lumps and some but not all show tiny holes. I would think it could be caused by a tiny insect not visible to the eye.
Thanks a lot for any help!