Caddis

The Caddisfly – A Global Staple in Fly Fishing

Caddisflies (Latin: Trichoptera) are found across the globe, just like mayflies, and can hatch in large numbers. They play a vital role in the diet of many fish species and are active primarily during evening and night. Their life cycle includes four key stages: Egg → Larva → Pupa → Adult insect

Some species also have a final phase after egg-laying, known as the spent stage—similar to mayflies—where the insect dies on the surface with wings spread.

Caddisflies thrive in both still and flowing water, and most hatches occur from summer through autumn.

Diversity and Simplicity

Although there are more than 12,000 described species of caddisflies worldwide, their size, color, proportions, and shape don’t vary dramatically. → That’s good news for us fly rod–waving trout hunters.

As anglers, we only need a handful of well-chosen imitations to cover the most important species. Most caddisflies range in color from brownish to black, with subtle variations.

J:son Match’n’Catch – Caddis Strategy

Always carry a variety of caddisfly imitations in your fly box. But don’t think of one fly as a standalone imitation—think in life cycles.

Make sure your box includes:

• Larvae

• Pupae

• Hatching caddis (emergers)

• Adult caddis (dry flies)

→ All in matching sizes and colors

A Practical Starting Point

Because many caddis species look alike, a smart starting selection includes:

• Colors: Green, brown, dark brown, black

• Sizes: Two or three key sizes to match local hatches

This approach gives you coverage across most water types and conditions—without overloading your fly box.

Would you like me to format this for product pages, add internal links to your caddis categories, or create a matching Swedish version? I can also help build a visual layout with icons or accordion sections for each life stage.