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Closeup insects from the Henry's Fork of the Snake River

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Female Ephemerella excrucians (Pale Morning Dun) Mayfly DunFemale Ephemerella excrucians (Pale Morning Dun) Mayfly Dun View 5 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Female Ephemerella excrucians (Pale Morning Dun) Mayfly SpinnerFemale Ephemerella excrucians (Pale Morning Dun) Mayfly Spinner View 6 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Male Hydropsyche (Spotted Sedges) Caddisfly AdultMale Hydropsyche (Spotted Sedges) Caddisfly Adult View 8 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 16, 2020
Lepidoptera (Moths) Moth AdultLepidoptera (Moths) Insect Adult View 8 PicturesIn the field, I accidentally mistook this moth for a weird-looking caddisfly. Only later did I notice the moth mouthparts and that the "hair" on the wings is actually tiny, flat scales.
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly DunFemale Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Dun View 6 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly SpinnerFemale Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner View 6 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 16, 2020
Female Siphlonurus occidentalis (Gray Drake) Mayfly SpinnerFemale Siphlonurus occidentalis (Gray Drake) Mayfly Spinner View 5 PicturesThis specimen was identified by association with this male.
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 16, 2020
Formicidae (Ants) Ant AdultFormicidae (Ants) Insect Adult View 5 PicturesThis seems to be what a lot of anglers call a "Cinnamon Ant," caught floating down the Henry's Fork.
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 16, 2020
Helicopsyche borealis (Speckled Peter) Caddisfly AdultHelicopsyche borealis (Speckled Peter) Caddisfly Adult View 7 PicturesThis one keys pretty easily to the Helicopsychidae family, of which there is only one genus in North America, and one species reported in this general area.
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Male Hydropsyche (Spotted Sedges) Caddisfly AdultMale Hydropsyche (Spotted Sedges) Caddisfly Adult View 5 PicturesThis was identified by Dave Ruiter as Hydropsyche californica or Hydropsyche occidentalis, but the characteristics were not clear enough to tell them apart.
Collected August 11, 2018 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on June 12, 2019
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