Ah, yes. Actually, I had no clue what it was, but felt obligated to write something on the form because it encourages guessing! Is there enough information in the image to identify it down to species? Trying to get an insect list for a watershed baseline study. It was too beautiful to collect. Thanks for the help. Any ideas about this behavior?

Kim-

Your photo is of a Hexagenia male subimago, most likely H. limbata. Yes, they are indeed beautiful. If your question is about being able to move the leaf without the insect flying away, there a two possible explanations. Firstly, Hexagenia are notoriously tolerant of human interaction. Secondly, it may have had higher priorities than moving at the moment, as it could have been in the initial stages of metamorphosis from (sexually immature) subimago to (sexually mature) imago.