The Buttcrack Baetis by Duane Redford is a small, rather unusual mayfly/midge attractor nymph popular these days on Colorado’s West Slope but worth fishing on any clear, heavily-pressured water where the fish eat small, slender bugs.
Hook: Standard scud, #16-22.
Bead: Copper or gold brass or tungsten to match wire color and hook size. Here, the #18 hook is matched with a 5/64″ bead. The bead is optional.
Thread: 8/0 or 10/0 in preferred body color. Here, brown. Purple and shades of olive are also good.
Tail: Coq-de-Leon or similar speckled game bird or chicken feather fiber.
Rib: Copper or gold wire, small to extra small.
Abdomen: Tying thread.
Wing Case: Split strip of .5mm or 1mm foam, usually white.
Flash: Mini flat braid or similar braided mylar in pearl or root beer colors.
Thorax: Ice Dub. Here rusty brown. Change color to match overall colorway of the fly.