Abnormal growth. It looks to be caused by Coneflower Rosette Mite. See: https://bygl.osu.edu/node/881
Also: http://jimmccormac.blogspot.com/2015/08/a-strange-gall-and-unexpected-occupant.html?m=1
Very unsure of initial ID. iNat's ID engine wasn't very helpful.
Note one-leg stance in photo #3.
See the bee on the second UV picture?
The second picture is UV flora, aka UV flora bug vision
Note: photos updated. Replaced cell phone photos with better, more detailed camera photos of the same specimen taken at the same time.