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.

Middle Fork Snoqualmie

From the Middle Fork Snoqualmie River in Washington

Stream photos

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

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.

10 Recently Added Photos

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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Male Epeorus (Little Maryatt) Mayfly Dun Pictures

This Epeorus dun managed to emerge successfully even though it had apparently long several legs at some point and only partially grown them back.

Ruler view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from the West Branch of the Delaware River in New York The smallest ruler marks are 1 mm.

Lateral view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from the West Branch of the Delaware River in New York

Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from the West Branch of the Delaware River in New York

Dorsal view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from the West Branch of the Delaware River in New York

Ventral view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from the West Branch of the Delaware River in New York

This mayfly was collected from the West Branch of the Delaware River in New York on May 15th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.

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