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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.

Closeup insects by Bnewell from the Touchet River in Washington

Ventral view of a Male Rhithrogena robusta (Heptageniidae) Mayfly Spinner from the Touchet River in Washington
Male Rhithrogena robusta (Heptageniidae) Mayfly Spinner from the Touchet River in Washington
These specimens were collected from a mating swarm from the east branch of the North Fork of the Touchet River, upstream from the Bluewood Ski Area turn.It was a sunny warm day, mating swarm as 4-8 ft. above this small stream. Four male spinners were collected.Stream photos were taken.

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Adirman
Adirman's profile picture
Monticello, NY

Posts: 479
Adirman on Jul 15, 2011July 15th, 2011, 2:05 pm EDT
I see it has mosquito like front legs and only 2 tails that are quite long: is this normal?
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Jul 15, 2011July 15th, 2011, 2:14 pm EDT
Male spinners usually have long front legs and long tails. The number of tails is normal for adults in this family.
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Jul 15, 2011July 15th, 2011, 9:04 pm EDT
A-man,

The purpose of these long legs is to grasp the female in a way that proper leverage and balance can be utilized to make aerial copulation possible... Founders of the mile high club?

Kurt
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman

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