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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

For how many years, I wonder, have these huge slabs of rock sheltered wild brook trout? From Mystery Creek # 89 in New York

Stream photos

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Skwala (Large Springfly) Stonefly NymphSkwala (Large Springfly) Stonefly Nymph
Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington
This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Stonefly Genus Utacapnia (Little Snowflies)

Genus Range

Specimens of the Stonefly Genus Utacapnia

2 Nymphs

Start a Discussion of Utacapnia

Stonefly Genus Utacapnia (Little Snowflies)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Plecoptera (Stoneflies)
  5. » Family Capniidae (Snowflies)
  6. » Genus Utacapnia (Little Snowflies)
Species in Utacapnia
Utacapnia distinctaLittle Snowflies
2
2
Species in Utacapnia: Utacapnia distincta
10 species (Utacapnia columbiana, Utacapnia imbera, Utacapnia labradora, Utacapnia lemoniana, Utacapnia logana, Utacapnia nedia, Utacapnia poda, Utacapnia sierra, Utacapnia tahoensis, and Utacapnia trava) aren't included.
Genus Range
Common Names
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