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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.

The trees were leafing out and the trout were rising on this productive Wisconsin stream From the Namekagon 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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Stonefly Genus Prostoia (Tiny Winter Blacks)

Where & when

In 86 records from GBIF, adults of this genus have been collected during April (35%), March (30%), May (20%), February (9%), and June (6%).

In 11 records from GBIF, this genus has been collected at elevations ranging from 20 to 10007 ft, with an average (median) of 499 ft.

Genus Range
Map of specific collection sites

Specimens of the Stonefly Genus Prostoia

1 Nymph
Prostoia (Tiny Winter Black) Stonefly Nymph
6 Pictures
Dorsal view of a Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Added by Troutnut on April 7, 2006
Collected March 28, 2006 from Salmon Creek in New York and added by Troutnut on April 7, 2006

Start a Discussion of Prostoia

Stonefly Genus Prostoia (Tiny Winter Blacks)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Plecoptera (Stoneflies)
  5. » Family Nemouridae (Forestflies)
  6. » Genus Prostoia (Tiny Winter Blacks)
Species in Prostoia
Prostoia completaCentral Forestflies
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Species in Prostoia: Prostoia completa
3 species (Prostoia besametsa, Prostoia hallasi, and Prostoia similis) aren't included.
Genus Range
Map of specific collection sites
Common Name
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