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Insect Order Plecoptera (Stoneflies)



Pictures Below ↓

This is page 12 of specimens of Plecoptera. Visit the main Plecoptera page for:

  • The behavior and habitat of Plecoptera.
  • 6 underwater pictures of Plecoptera.

Pictures of 151 Stonefly Specimens:

Specimen Page:1...111213...16
Kogotus nonus Stonefly NymphKogotus nonus Stonefly Nymph View 9 PicturesAlthough Kogotus and Rickeri nymphs may be difficult or impossible to tell apart, I captured an adult Kogotus nonus specimen in the air on the same day as several of these nymphs, and they are likely the same species.
Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019
Taenionema (Willowflies) Stonefly NymphTaenionema (Willowflies) Stonefly Nymph View 11 PicturesThis specimen was the only one of its kind in my kick net sample from this small creek. At first I thought it was Nemouridae, but it's not. Unfortunately, there is no species key available for Taenionema nymphs. Potential species found in Washington include nigripenne, oregonense, pacificum, and pallidum.
Collected April 12, 2021 from Holder Creek in Washington
Added to Troutnut.com by Troutnut on April 13, 2021
Female Alloperla (Sallflies) Stonefly AdultFemale Alloperla (Sallflies) Stonefly Adult View 9 Pictures
Collected July 9, 2019 from Rock Creek in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Hesperoperla pacifica (Golden Stone) Stonefly NymphHesperoperla pacifica (Golden Stone) Stonefly Nymph View 9 PicturesID notes from the microscope: The occiput (Occiput: The back of the head.) has a sinuate, irregularly spaced spinule row.
Collected August 3, 2020 from the East Fork Big Lost River in Idaho
Added to Troutnut.com by Troutnut on August 19, 2020
Female Hesperoperla pacifica (Golden Stone) Stonefly AdultFemale Hesperoperla pacifica (Golden Stone) Stonefly Adult View 12 Pictures
Collected August 1, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 17, 2020
Isoperla fusca (Yellow Sally) Stonefly NymphIsoperla fusca (Yellow Sally) Stonefly Nymph View 12 PicturesThis specimen keys to Isoperla fusca using the key in Szczytko & Stewart 1979, but some species of Isoperla weren't represented there.
Collected April 9, 2021 from the Yakima River in Washington
Added to Troutnut.com by Troutnut on April 12, 2021
Pteronarcys californica (Giant Salmonfly) Stonefly NymphPteronarcys californica (Giant Salmonfly) Stonefly Nymph View 5 PicturesThis salmonfly nymph is probably not quite fully grown, as it still has a couple months yet to emerge.
Collected April 9, 2021 from the Yakima River in Washington
Added to Troutnut.com by Troutnut on April 12, 2021
Suwallia pallidula (Sallfly) Stonefly NymphSuwallia pallidula (Sallfly) Stonefly Nymph View 6 PicturesThis specimen keys out to Suwallia, for which I did not find any nymph species keys. However, I'm placing it in Suwallia pallidula because I caught a few adults in the same spot that closely resembled the abundant nymphs and keyed them out to species. Features I noted under the microscope when keying this specimen to genus included apical (Apical: Close to the apex; tip or end.) hairs of cercal segments that were directed at posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") angles, and the longest apical (Apical: Close to the apex; tip or end.) hairs of distal (Distal: Far from the point of attachment or origin; near the tip.) segments were shorter than their following segment.
Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019
Male Doroneuria baumanni (Golden Stone) Stonefly AdultMale Doroneuria baumanni (Golden Stone) Stonefly Adult View 18 PicturesI found this stonefly on some streamside vegetation. I didn't see any in the air in several hours of fishing.
Collected September 10, 2020 from the Foss River in Washington
Added to Troutnut.com by Troutnut on September 19, 2020
Hesperoperla pacifica (Golden Stone) Stonefly NymphHesperoperla pacifica (Golden Stone) Stonefly Nymph View 13 Pictures
Collected March 19, 2019 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 14, 2019
Specimen Page:1...111213...16
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