Rabbit fur (tail) Black ostrich herl (small pinch)
Krystal Flash Red holographic tinsel (2 strands)
Micro chenille (body) UV black micro chenille (body length)
How to tie it
Lay a fly pin with its bead along the top of the shank so the bead sits a bead's-width past the eye; lash the pin down over the front third, jam the bead tight, and secure with thread and a drop of superglue.
Wrap the thread back to the bend.
Tie in a small pinch of black rabbit fur at the bend for the tail, about one shank length, with 2 strands of red Krystal Flash alongside.
Tie in UV black micro chenille and wrap it forward to just behind the bead; tie off.
Whip finish behind the bead and cement; hang the fly from tippet to confirm it balances level.