Hatch Imitations

Flies That Imitate Sow Bugs

3 proven patterns designed to match sow bugs across multiple life stages. From subsurface nymphs to surface duns, these are the flies that consistently fool selective trout.

Sexy Walt's Worm fly pattern
Nymph

Sexy Walt's Worm

A modernized version of Walt's Worm with a UV dubbing body and a glass bead for subtle weight and tr

Sizes 12–16

Sow Bug fly pattern
Nymph

Sow Bug

The Sow Bug (or aquatic isopod) imitation is a flat-profiled, segmented nymph that imitates the tiny

Sizes 14–18

Czech Nymph fly pattern
Nymph

Czech Nymph

The pattern that launched the tight-line nymphing revolution. Developed by Czech competition anglers

Sizes #8–#14