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Oakleaf gall (8)
dryas Silver Note Writer [C: 2 W: 0 N: 110] (1307)
Gall on oak leaf, caused by gall wasp.
Dead leaves of summer oak.
Gall wasp = Cynips quercusfolii.
Another pic in my workshop.

Eikenbladgal.
Thanks for viewing and commenting.
gr.Yves

Altered Image #1

dryas Silver Note Writer [C: 2 W: 0 N: 110] (1307)
Gall
Edited by:dryas Silver Note Writer [C: 2 W: 0 N: 110] (1307)

Profile with larva nest in the middle.
gr.Yves