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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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 Ceraclea transversa (Scaly-Wing Sedges)

Where & when

Time of year : Summer

This species is very abundant in the Northeast.

In 86 records from GBIF, adults of this species have mostly been collected during July (31%), June (29%), August (21%), May (9%), and September (6%).

In 39 records from GBIF, this species has been collected at elevations ranging from 255 to 4560 ft, with an average (median) of 1411 ft.

Species Range

Hatching behavior

Time of day : Evening

Larva & pupa biology

Current speed: Slow


Start a Discussion of Ceraclea transversa

References

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

Caddisfly Species Ceraclea transversa (Scaly-Wing Sedges)

Taxonomy
Species Range
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