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Telluride Outside Fly Fishing Guide

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Telluride Fly Fishing Entomology

Plecoptera- Stone Flies- winged and live among the stones:

These predaceous nymphs live aquatically for two to four years before becoming airborne. The airborne stage lives two days. They hatch primarily in the spring. They are primitive and require turbulent, clean and oxygenated water to survive. The common types are: Salmonfly, Golden, Little Yellow, Green and Brown. You can distinguish Stonefly nymphs from Mayfly nymphs: Stoneflies have pronounced antennae, Stoneflies don’t have three tails (Mayflies have two or three tails), and Stoneflies have more distinct thoracic segmentation.

Golden Stonefly - Nymph

Golden Stonefly (Nymph)

Golden Stonefly (Adult)

Golden Stonefly (Adult)

Ephemeroptera- Mayflies- winged and ephemeral:

These herbivorous nymphs live aquatically for twelve months before becoming airborne. The airborne stage lives for one day as a dun (sub imago) and another day as a spinner (imago). They hatch throughout the year though primarily in the late summer. Mayflies are divided into four groups: burrowers, clingers, crawlers and swimmers. Mayflies go through twenty to thirty molts before reaching adulthood. The common types are: BWO, PMD, Red and Yellow Quill, Speckle Wing Quill (Callibaetis), Green and Gray and Brown Drakes, March Brown, Trico, Hex, Ameletus.

Pale Morning Dun (Nymph)

Pale Morning Dun (Nymph)

Pale Morning Dun

Pale Morning Dun

Blue Winged Olive (Nymph)

Blue Winged Olive (Nymph)

Blue Winged Olive Dun

Blue Winged Olive Dun

Tichoptera- Caddis Flies- hair wings:

These herbivorous nymphs live aquatically for twelve months as a larva and then a pupa (one week) before becoming airborne. The airborne stage lives for one week. They hatch primarily in the spring and fall. Caddis are divided into five groups: free living, net spinning, web spinning, purse case and saddle case. Adult Caddis skitter and thus action on the dry fly can produce strikes. The common types are: American Granom (square wood case), Glossoma, Fall Caddis, Green Sedge, Little Western Weedy Water Sedge (round wood case), Spotted Sedge. You can distinguish Caddis from Stones and Mays because many species are in webs or cases and all species are caterpillar like.

American Grannom (Larva)

American Grannom (Larva)

American Grannom (Adult)

American Grannom (Adult)