Build a bright green segmented body around the curve. Genuinely bright; Rhyacophila are almost chartreuse.
Dub a small black thorax, add a few black hen fibers as legs.
Whip finish behind the bead.
Substitutions
Body instead of Bright green dubbing or latex: Chartreuse Superfine — Easy to dub bright body; Green latex strip (wrapped) — Translucent and segmented; Chartreuse vernille — Quick body, bright color
Thorax instead of Black dubbing: Peacock herl — Buggy, iridescent head; Black Ice Dub — Dark with flash