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Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Updates from September 4, 2020

Photos by Troutnut from Silver Creek and Trail Creek in Idaho

On-stream insect photos by Troutnut from Silver Creek in Idaho

Closeup insects by Troutnut from Silver Creek in Idaho

Male Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner
Some notes from identifying this specimen under the microscope:

1. The hind wing has three longitudinal veins, but the third is faint, short (about half the length of the wing), and close to the wing margin.
2. Then antenna is brown fading into white at the tip, and the base is ringed with white.
3. The joints of the tarsal segments on the middle and hind leg have fine black markings.

It was also collected in association with a female spinner.
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner
This female spinner was deceased when photographed, so the posture is unnatural, but it was a substantial hatch and clearly worth imitating (with wet flies to imitate the sunken ovipositing females) so I went ahead with the photos.

It was collected in association with a male spinner.
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