Header image
Enter a name
Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Cedar sweepers line the fertile spring creek headwaters of a famous trout stream. From the Bois Brule River in Wisconsin

Stream photos

Featured on the forum
Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)
Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf
Re: UV spectrum and trout
In General Discussion by Martinlf
Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)
Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)
Female Hydropsyche (Spotted Sedge) Caddisfly AdultFemale Hydropsyche (Spotted Sedge) Caddisfly Adult
Lateral view of a Female Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Adult from the Columbia River in Washington
7 Recently Added Photos
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Caddisfly Species Cheumatopsyche gracilis (Little Sister Sedges)

Where & when

Time of year : June

This species is abundant in the East and Midwest, where it produces fishable hatches. It is also found in the northern part of the West.

In 74 records from GBIF, adults of this species have mostly been collected during June (30%), July (30%), August (18%), and May (14%).

In 11 records from GBIF, this species has been collected at elevations ranging from 600 to 5381 ft, with an average (median) of 5000 ft.

Species Range
Map of specific collection sites

Larva & pupa biology

Environmental tolerance: Very tolerant of both warm water and organic pollution


Start a Discussion of Cheumatopsyche gracilis

References

  • LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.

Caddisfly Species Cheumatopsyche gracilis (Little Sister Sedges)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Hydropsychidae
  6. » Genus Cheumatopsyche (Little Sister Sedges)
  7. » Species gracilis (Little Sister Sedges)
Species Range
Map of specific collection sites
Common Names
Resources
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy