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Caddisfly Family Hydropsychidae

Taxonomic Navigation -?-
Genus in HydropsychidaeNumber of SpecimensNumber of Pictures
ArctopsycheGreat Gray Spotted Sedges114
CeratopsycheSpotted Sedges00
CheumatopsycheLittle Sister Sedges640
HydropsycheSpotted Sedges1181
MacrostemumGlossy Wing Sedges00

5 genera aren't included.

Pictures Below

This is page 3 of specimens of Hydropsychidae. Visit the main Hydropsychidae page for:

  • The behavior and habitat of Hydropsychidae.
  • 1 underwater picture of Hydropsychidae.

Pictures of 28 Caddisfly Specimens in the Family Hydropsychidae:

Specimen Page:1234
Male Cheumatopsyche (Little Sister Sedges) Caddisfly AdultMale Cheumatopsyche (Little Sister Sedges) Caddisfly Adult View 12 PicturesI didn't identify this one directly, but I eventually identified one of several I collected from the same swarms that appeared to be of the same species. (I lost track of which specimen was which in storage.) The microscope pictures come from one of these specimen, not necessarily the same specimen as the DSLR pictures. They key to Cheumatopsyche, and the hind wing venation (Venation: The pattern in which the veins on the wings of an insect are arranged. It is usually one of the most useful identifying characteristics.) that separates them from Hydropsyche is pretty clear in the attached picture as well as another specimen I checked under the scope.

This specimen was one of tens of thousands we saw on a July 1st evening on the Madison, beginning with big swarms around every vehicle and tree at the Eight Mile Ford access point and continuing all up and down the river bank. We somehow didn't catch any trout, perhaps because they were stuffed with pupae from when these things emerged. Or maybe we just weren't fishing well. Either way, this one represents a major hatch there.

I somehow forgot to photograph this important specimen against the hooks size chart, but fortunately I preserved a few. The body length is about 6 mm, and total length from head to wingtip is 9 mm.
Collected July 1, 2019 from the Madison River in Montana
Added to by Troutnut on July 18, 2019
Male Hydropsyche occidentalis (Spotted Sedge) Caddisfly AdultMale Hydropsyche occidentalis (Spotted Sedge) Caddisfly Adult View 6 PicturesDave Ruiter identified this specimen from pictures as Hydropsyche occidentalis.

Collected June 30, 2019 from the Madison River in Montana
Added to by Troutnut on July 17, 2019
Hydropsychidae Caddisfly AdultHydropsychidae  Caddisfly Adult View 8 Pictures
Collected July 8, 2019 from the Ruby River in Montana
Added to by Troutnut on July 18, 2019
Cheumatopsyche (Little Sister Sedges) Caddisfly PupaCheumatopsyche (Little Sister Sedges) Caddisfly Pupa View 3 PicturesI was surprised how bright green this pupa is. It's chartreuse. After collecting it, I experimented with melting down chartreuse jigs and making little translucent rubber caddis abdomens on my flies. They looked good, and the trout liked them, but they weren't very durable at all. This specimen is recently deceased in the photographs.
Collected May 18, 2004 from the Namekagon River in Wisconsin
Added to by Troutnut on January 25, 2006
Hydropsychidae Caddisfly LarvaHydropsychidae  Caddisfly Larva View 5 PicturesThis is one of the most vividly green Hydropsychidae larvae I've caught.
Collected May 6, 2007 from Mongaup Creek in New York
Added to by Troutnut on May 18, 2007
Hydropsychidae Caddisfly LarvaHydropsychidae  Caddisfly Larva View 4 PicturesEvery picture of this Hydropsychidae larva was taken with my old C740UZ through a microscope.
Collected November 15, 2004 from Fall Creek in New York
Added to by Troutnut on April 12, 2006
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 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 by Troutnut on June 12, 2019
Specimen Page:1234
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