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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.

Of all the pools I've fished, this one was most deserving of the colorful little brook trout it held. From Mystery Creek # 89 in New York

Stream photos

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Female Hydropsyche (Spotted Sedge) Caddisfly AdultFemale Hydropsyche (Spotted Sedge) Caddisfly Adult
Lateral view of a Female Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Adult from the Columbia River 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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Drunella coloradensis (Small Western Green Drake) Mayfly Nymph Pictures

Drunella flavilinea Dorsal view of a Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho
Ventral view of a Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho
Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho
Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho
Note this nymph is a lot larger than the size 18 hook in the picture, at least a 16 or perhaps 14. It was just squirming around too much to photograph next to the correct hook size. Ruler view of a Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho The smallest ruler marks are 1 mm.
This group of nymphs doesn't include the other one photographed here, but I included it to illustrate the variety of colors found in this species in the same river. Drunella coloradensis (Ephemerellidae) (Small Western Green Drake) Mayfly Nymph from Green Lake Outlet in Idaho

This mayfly was collected from Green Lake Outlet in Idaho on August 4th, 2020 and added to Troutnut.com by Troutnut on August 20th, 2020.


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Drunella coloradensis (Small Western Green Drake) Mayfly Nymph Pictures

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Ephemeroptera (Mayflies)
  5. » Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
  6. » Genus Drunella (Blue-Winged Olives)
  7. » Species coloradensis (Small Western Green Drakes)
Collection details
Location: Green Lake Outlet, Idaho
Date: August 4th, 2020
Added to site: August 20th, 2020
Author: Troutnut
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