Hans' beautiful Henry's Fork Caddis got me thinking about Mike Lawson's Caddis Emerger. It's worked well for me; a bit hard to see when the light's going off the water, which is when the hatch really seems to crank up. By that point, though, you can get pretty close to the fish and they won't spook making it easier to pick up the bug. When it's really dark you just pitch it out there and wait for the tug. If your nerves are good, you usually have a fish; if you're like me you break it off as often as not.
hook - Dai Riki 320 #16
thread - Uni 8/0 tan
body - hare's ear/antron
shuck/back/underwing - Widow's Web tan
rib - copper wire x-small
wing - partridge feathers (2)
head - peacock herl
Part 1
mash barb, attach thread and wire at 60% mark and wrap back to point above barb
dub thread
dub body up to 75% mark
tie in Widow's Web at front of abdomen; let extra hang over hook eye
pull Widow's Web over back and trap with copper wire
continue wrapping wire rib forward through thorax; helicopter and tie off
trim shuck fairly short
fold underwing back and tie down
trim underwing even with hook bend