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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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Limnephilus (Summer Flier Sedge) Caddisfly LarvaLimnephilus (Summer Flier Sedge) Caddisfly Larva
Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington
This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.
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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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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph Pictures

Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington
Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington
Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington
Dorsal view of a Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington
Ruler view of a Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington The smallest ruler marks are 1 mm.
Ventral view of a Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Dosewallips River in Washington

This mayfly was collected from the Dosewallips River in Washington on July 6th, 2020 and added to Troutnut.com by Troutnut on July 12th, 2020.


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Ephemerella excrucians (Pale Morning Dun) 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 Ephemerella (Hendricksons, Sulphurs, PMDs)
  7. » Species excrucians (Pale Morning Duns)
Collection details
Location: Dosewallips River, Washington
Date: July 6th, 2020
Added to site: July 12th, 2020
Author: Troutnut
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