Learn/Fly Box/Stonefly nymph/Girdle Bug
Girdle Bug
Stonefly nymph

Girdle Bug

Plecoptera, NYMPH
Trout · GraylingDeep

Chenille body, rubber legs at every joint — a big, buggy stonefly nymph that has anchored a thousand Western and Alpine rigs. Crude up close, irresistible on the drift.

Fish this when

The point fly on a heavy nymph rig in fast, broken or coloured water, especially early season and after rain when big stonefly nymphs are dislodged.

Why it works

The rubber legs never stop moving in the current, and the sheer size offers a calorie-rich target a trout will move for even when it is not actively feeding.

Naturals it imitates
Stonefly nymphPlecopteraNYMPH
Typical zone & fishable range
usually
Surface
Film
Subsurface
Deep
Setup sensitivity: medium
Hook range#6–12
Quick facts
Heritage
ModernClassicHeritage
Modern
Similar flies
Included in packs
Euro point-fly packWinter grayling anchors