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Insect Order Plecoptera (Stoneflies)

Pictures Below

This is page 13 of specimens of Plecoptera. Visit the main Plecoptera page for:

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

Pictures of 147 Stonefly Specimens:

Specimen Page:1...121314...16
Chloroperlidae (Sallflies) Stonefly NymphChloroperlidae (Sallflies) Stonefly Nymph View 7 Pictures
Collected May 10, 2008 from the Chena River in Alaska
Added to by Troutnut on April 20, 2011
Female Suwallia pallidula (Sallfly) Stonefly AdultFemale Suwallia pallidula (Sallfly) Stonefly Adult View 9 PicturesI collected a few of these throughout the afternoon. The positive ID on the adults allowed me to also put a species ID on the nymphs.
Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to by Troutnut on July 29, 2019
Male Strophopteryx fasciata (Mottled Willowfly) Stonefly AdultMale Strophopteryx fasciata (Mottled Willowfly) Stonefly Adult View 2 PicturesThis male died overnight before I had the chance to photograph him, so his abdomen is shorter than it should be because it shriveled a bit.
Collected March 16, 2004 from the Namekagon River in Wisconsin
Added to by Troutnut on January 25, 2006
Male Chloroperlidae (Sallflies) Stonefly AdultMale Chloroperlidae (Sallflies) Stonefly Adult View 4 PicturesThis specimen unfortunately was blown away by the wind mid-way through the photographs, so I wasn't able to preserve it for an ID or get some of the other angles.
Collected August 4, 2020 from Green Lake Outlet in Idaho
Added to by Troutnut on August 19, 2020
Isoperla fulva (Yellow Sally) Stonefly AdultIsoperla fulva (Yellow Sally) Stonefly Adult View 4 PicturesAn adult stonefly carrying a load of red mites.
Collected May 31, 2011 from the Touchet River in Washington
Added to by Bnewell on June 27, 2011
Plecoptera (Stoneflies) Stonefly NymphPlecoptera (Stoneflies) Insect Nymph View 3 PicturesThis is a really small stonefly adult, about 3/8 of an inch body length.
Collected April 28, 2004 from the Namekagon River, below Lake Hayward in Wisconsin
Added to by Troutnut on January 25, 2006
Isoperla quinquepunctata (Little Yellow Stonefly) Little Yellow Stonefly NymphIsoperla quinquepunctata (Little Yellow Stonefly) Stonefly Nymph View 2 PicturesSize - (excluding tails) - 10 mm
Status at time of photo - preserved but no discernible color change as specimen was captured only a few days earlier.
Key characters - unique pattern on dorsal (Dorsal: Top.) head and thorax (Thorax: The thorax is the middle part of an insect's body, in between the abdomen and the head, and to which the legs and wings are attached.); dark medial (Medial: Toward the middle of the body.) terga (Tergum: the dorsal part of an abdominal segment or segments (terga). Also used to describe the entire abdominal dorsum or the thoracic dorsal segments of Odonata.) stripe between two paler stripes

This species is very common in west slope north Sierra watersheds. Richard W. Baumann & Boris C. Kondratieff did a study on the same section and at the same time of year (APRIL 25-29, 2010) where this specimen was taken. No other species of Isoperla were reported from this location and quinquepunctata was very abundant. Their hatches can be very heavy some Springs.

Collected March 21, 2011 from the Lower Yuba River in California
Added to by Entoman on November 1, 2011
Female Pictetiella expansa Stonefly AdultFemale Pictetiella expansa  Stonefly Adult View 12 PicturesBased on photos, this specimen seems to key out (using Merritt & Cummins 4th Edition) to Pictetiella expansa, but some of the characteristics aren't 100 % clear. However, that species is listed as occurring near Puget Sound and the head markings are similar to (albeit not a perfect match for) those of a male from Colorado in the scientific literature here: (Pronotum: The top of the insect prothorax.)-dorsal (Dorsal: Top.)-Pictetiella-expansa-Boulder-Co-Colorado-North-Fork-Middle_fig1_315373449
Collected June 16, 2018 from the South Fork Snoqualmie River in Washington
Added to by Troutnut on July 3, 2018
Specimen Page:1...121314...16
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