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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.

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.

Stonefly Species Acroneuria abnormis (Golden Stones)

Where & when

In 64 records from GBIF, adults of this species have mostly been collected during June (45%), July (27%), and May (22%).

In 48 records from GBIF, this species has been collected at elevations ranging from 20 to 10663 ft, with an average (median) of 1743 ft.

Species Range

Specimens of the Stonefly Species Acroneuria abnormis

3 Nymphs

Start a Discussion of Acroneuria abnormis

Stonefly Species Acroneuria abnormis (Golden Stones)

Taxonomy
Species Range
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