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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Waterfalls over smooth bedrock above Titcomb Lakes From Titcomb Basin in Wyoming

Stream photos

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Male Baetidae (Blue-Winged Olive) Mayfly DunMale Baetidae (Blue-Winged Olive) Mayfly Dun
Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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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.
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Caddisfly Species Rhyacophila brunnea (Green Sedges)

Where & when

Time of year : Spring and summer

This transcontinental species is most common in the West.

In 51 records from GBIF, adults of this species have mostly been collected during July (37%), August (29%), June (16%), and May (12%).

In 33 records from GBIF, this species has been collected at elevations ranging from 443 to 10121 ft, with an average (median) of 7940 ft.

Species Range
Map of specific collection sites

Egg-Laying behavior

Time of day: Afternoon

Larva & pupa biology

Diet: Decaying leaves

Current speed: Fast

Specimens of the Caddisfly Species Rhyacophila brunnea

1 Larva
Rhyacophila brunnea (Green Sedge) Caddisfly Larva
4 Pictures
Dorsal view of a Rhyacophila brunnea (Rhyacophilidae) (Green Sedge) Caddisfly Larva from unknown in Wisconsin
Added by Troutnut on January 25, 2006
Collected February 6, 2004 from unknown in Wisconsin and added by Troutnut on January 25, 2006

Start a Discussion of Rhyacophila brunnea

References

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

Caddisfly Species Rhyacophila brunnea (Green Sedges)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Rhyacophilidae (Green Sedges)
  6. » Genus Rhyacophila (Green Sedges)
  7. » Species brunnea (Green Sedges)
Species Range
Map of specific collection sites
Common Names
Resources
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