These annular outgrowths on oak leaves are associated with the food activity of tiny insects. These insects are called Neuroterus numismalis.
It seemed to me an excellent topic for black and white photographs in the macro. And now you can see them.
Сamera: Nikon D3400 | 55mm
Photos by @grildrig.
Does it damage the leaves?
saw them for the first time.
very interesting . inside was a really weird! :D
but it's a very successful shot. Congratulations on the perfect detail
Какие интересные вредители. Красиво, но вредно )