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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.

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

I'm basing the ID of this near-mature nymph on a male spinner with similar size and markings, collected on the same trip. There isn't a key to reliably identify the nymphs of most Rhithrogena species otherwise.

Dorsal view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Ventral view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Body 11 mm long

Ruler view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington The smallest ruler marks are 1 mm.
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from Mystery Creek #249 in Washington

This mayfly was collected from Mystery Creek #249 in Washington on July 4th, 2020 and added to Troutnut.com by Troutnut on July 12th, 2020.


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Rhithrogena hageni (Western Black Quill) Mayfly Nymph Pictures

Collection details
Location: Mystery Creek #249, Washington
Date: July 4th, 2020
Added to site: July 12th, 2020
Author: Troutnut
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