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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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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True Fly Family Dixidae

Larva & pupa biology

The larvae live and feed in the surface film. This explains why the one I collected and photographed was difficult to keep below the water for clear photos... it really wanted to ride up in the film.

Specimens of the True Fly Family Dixidae

1 Pupa
1 Larva

Start a Discussion of Dixidae

True Fly Family Dixidae

Taxonomy
Genus in Dixidae
Dixa
1
10
Genus in Dixidae: Dixa
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