Silk button spangle galls are caused by the larvae of the gall wasp Neuroterus numismalis. It's strange how different species of wasp cause the oak tree to build completely different structures.
I think I've seen similar ones to these. It's been a long time though. I would never know it was wasp larvae.
John, I have not seen this before or if I did, did not know what it was so found the picture very interesting. Thanks for sharing it and now you can be sure I will be looking for silk button spangle galls.
I have seen this on leaves though never knew what caused it. Thanks for the info and a great photo as well.
I have never seen this kind of gall. Very interesting.
I love the way you focus in on the small, beautiful, exquisite detail. Nature is so wonderful. Thank you for sharing the photo.
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