Congratulations and the virtual gold star to TexWisGirl, Wilma, Adrian and Ragged Robin for recognising that last week's mystery photo showed part of a dragonfly:
I'm pretty sure it is a female Common Darter. There was a male resting on the same small piece of wood but they were too far apart to get them both in focus at the same time.
On to this week's mystery photo made from ten stacked macro shots.
Clue: Grab the knotted string but mind your knuckles.
No prizes. Just for fun. Any guesses left in the comments will be revealed, along with the answer, next Monday.