This is a little mayfly that I have been tying to imitate the black Mayflies that hatch on our rivers. They are tied on a Dohiku dry fly hook, have a body made from Hends body Quill in black with a yellow rib. Both flies as below has a wing of Snowshoe rabbit fur, but the bottom one has some additional black hackle around the wing and the wing is a bit thinner. Both also have some CDC dubbing around the thorax.
A more detailed pic of the second fly.
An extended body version