Black Darter on a silky white birch (Sympetrum danae - male).
An almost colorless and graphical impression, even in such direct sunlight.
Pretty sharp for a 2x teleconverter capture. The optics used equals FF focal length 588mm.
Note i.e. the extreme fine veins in its left forewing, and even the shadows of its facial hair!
The Zuiko EC-20 converter is surely good glass!