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Updates from July 31, 2020



Photos by Troutnut from Slough Creek and the Henry's Fork of the Snake River in Wyoming and Idaho

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Two whitetail deer in one of the meadows along Slough Creek. I watched them all morning before I hiked out. From Slough Creek in Wyoming.
Two whitetail deer in one of the meadows along Slough Creek. I watched them all morning before I hiked out.
StateWyoming
LocationSlough Creek
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
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These were the contents of my bug net after several swoops through the grass along the Henry's Fork. From the Henry's Fork of the Snake River in Idaho.
These were the contents of my bug net after several swoops through the grass along the Henry's Fork.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
View Full SizeView Full Size and Comment (5.6X larger)
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1
View Full SizeView Full Size and Comment (5X larger)
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From the Henry's Fork of the Snake River in Idaho.
StateIdaho
LocationHenry's Fork of the Snake River
Date TakenJul 31, 2020
Date AddedAug 16, 2020
AuthorTroutnut
CameraNIKON 1 AW1

Closeup insects by Troutnut from the Henry's Fork of the Snake River in Idaho

Male Ephemerella excrucians (Pale Morning Dun) Mayfly DunMale Ephemerella excrucians (Pale Morning Dun) Mayfly Dun View 7 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 Siphlonurus occidentalis (Gray Drake) Mayfly SpinnerMale Siphlonurus occidentalis (Gray Drake) 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
Leptoceridae Caddisfly AdultLeptoceridae Caddisfly Adult View 17 PicturesThis specimen keyed easily to Leptoceridae, but I hit a bit of a dead end in the genus key, because I can't seem to find the cross-veins in the wings that are supposed to help narrow it down. I took pictures of all the relevant features under the microscope; maybe somebody with more experience with the family can help.
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 Ephemerella excrucians (Pale Morning Dun) Mayfly SpinnerMale Ephemerella excrucians (Pale Morning Dun) Mayfly Spinner 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 16, 2020
Male Ephemerella excrucians (Pale Morning Dun) Mayfly SpinnerMale 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 16, 2020
Female Hydropsyche (Spotted Sedges) Caddisfly AdultFemale Hydropsyche (Spotted Sedges) Caddisfly Adult View 7 PicturesThis species was really common along the Henry's Fork at the end of July. I photographed it along with a male that appears to be the same species, and another male of the same genus but a seemingly different, less common (on this day) species.
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 Siphlonurus occidentalis (Gray Drake) Mayfly SpinnerFemale Siphlonurus occidentalis (Gray Drake) Mayfly Spinner View 9 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 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
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 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 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 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
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
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
Female Acerpenna pygmaea (Tiny Blue-Winged Olive) Mayfly SpinnerFemale Acerpenna pygmaea (Tiny 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 17, 2020
Male Siphlonurus occidentalis (Gray Drake) Mayfly SpinnerMale Siphlonurus occidentalis (Gray Drake) Mayfly Spinner View 6 PicturesThis specimen was easy to key to species using the old keys in < id="115" />, and was the basis for IDs of several other Siphlonurus specimens of the same species collected on the same day.
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 Drunella flavilinea (Flav) Mayfly DunFemale Drunella flavilinea (Flav) Mayfly Dun View 6 PicturesI can't be certain of the ID of this female dun, but I'm calling it Drunella flavilinea for three reasons: 1) the known abundance of "flavs" on the Henry's Fork, 2) clear differences in coloration from my confirmed specimens of Drunella coloradensis, which is the main lookalike, and 3) the habitat (a sizable river in a wide mountain valley, rather than a small, high-altitude stream) suggests it's not coloradensis.
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 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 16, 2020
Male Hydropsyche (Spotted Sedges) Caddisfly AdultMale Hydropsyche (Spotted Sedges) Caddisfly Adult View 8 PicturesThis species was really common along the Henry's Fork at the end of July. I photographed it along with a female that appears to be the same species, and another male of the same genus but a seemingly different, less common (on this day) species.
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 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 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
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