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.

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Coleoptera (Beetle) Insect Larva Coleoptera (Beetle) Insect Larva

Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek 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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Rhithrogena hageni (Western Black Quill) Mayfly Nymph Pictures

This mature nymph was collected in the same riffle as a male spinner, from which I got the identification for both.

Ventral view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington

Dorsal view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington

Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington

Ruler view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) 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 May 14th, 2022 and added to Troutnut.com by Troutnut on May 16th, 2022.

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