671 thumb Selected Aquatic Insects of Oregon

Trout Unlimited and the River’s Calendar Project are initiating a pilot program in Oregon to track emergence dates of selected aquatic insects to assess if emergence periods are changing over time, possibly as a result of climate changes. The purpose of this field guide is to provide a quick ...more ↓

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Pale Morning Dun 1
Ephemerella excrucians
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Speckle-winged quill 1
Callibaetis ferrugineus hageni
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Western March Brown 2
Rhithrogena morrisoni
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Western Green Drake 1
Drunella doddsii
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Western Green Drake 1
Drunella grandis
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Black Drake 1
Siphlonurus occidentalis
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Hex 3
Hexagenia limbata
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Salmonfly 1
Pteronarcys californica
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Golden Stone 1
Hesperoperla pacifica
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Golden Stone 1
Calineuria californica
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Short-winged Golden Stone 1
Claassenia sabulosa
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Brown Willow Stonefly 1
Skwala americana
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McKenzie Caddis 1
Arctopsyche grandis
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American Grannom 2
Brachycentrus americanus
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October Caddis 1
Dicosmoecus

Edited by Jerry Schoen, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Rick Hafele, all rights reserved, uploaded by Jerry Schoen
  • 2. (c) Dave Hughes, all rights reserved, uploaded by Jerry Schoen
  • 3. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)

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