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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Lone tree on a rock in the middle of Big Lake. Fittingly, Big Lake is the largest of several short wide spots in the upper Brule River. From the Bois Brule River in Wisconsin

Stream photos

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Female Skwala (Large Springfly) Stonefly AdultFemale Skwala (Large Springfly) Stonefly Adult
Lateral view of a Female Skwala (Perlodidae) (Large Springfly) Stonefly Adult from Mystery Creek #308 in Washington
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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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Caddisfly Species Hydropsyche vexa (Spotted Sedges)

Where & when

Time of year : May & June

Preferred waters: Mid-sized rivers

This species is most common in the Midwest.

In 10 records from GBIF, adults of this species have been collected during June (50%), August (20%), July (20%), and May (10%).

In 3 records from GBIF, this species has been collected at elevations of 3, 33, and 2096 ft.

Species Range
Map of specific collection sites

Start a Discussion of Hydropsyche vexa

Caddisfly Species Hydropsyche vexa (Spotted Sedges)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Hydropsychidae
  6. » Genus Hydropsyche (Spotted Sedges)
  7. » Species vexa (Spotted Sedges)
Species Range
Map of specific collection sites
Common Name
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