Swap fly: Blood scud
Here's my entry for the trout fly swap. It's a little pattern that I've had very good luck with on heavily fished waters, probably because it's a bit different.
Hook: Scud hook, size 14
Weight: Copper bead head, size matched to hook
Thread: Fine monofilament
Tail: Red filoplume
Body: Red larva lace
Gills: Peacock herl
Different threads will give different results. The monofilament doesnít show through the translucent larva lace, but black thread would give a dark inner shading to the body. Itís an easy pattern. The most important part is wrapping the larva lace neatly and tightly.
Thanks to John for the imaging!