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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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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Epeorus grandis Mayfly Nymph Pictures

Ventral view of a Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Dorsal view of a Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Ruler view of a Epeorus grandis (Heptageniidae) Mayfly Nymph from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.

This mayfly was collected from the South Fork Snoqualmie River in Washington on March 19th, 2019 and added to Troutnut.com by Troutnut on June 14th, 2019.


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Epeorus grandis Mayfly Nymph Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: March 19th, 2019
Added to site: June 14th, 2019
Author: Troutnut
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