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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.

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

10 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.

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Updates from June 13, 2021

Updates from June 13, 2021

Photos by Troutnut from Spring Creek in Wisconsin

Spring Creek in Wisconsin

Spring Creek in Wisconsin

Spring Creek in Wisconsin

Closeup insects by Troutnut from Devil's Creek, the Teal River, and Spring Creek in Wisconsin

10
Female Chauliodes rastricornis (Fishfly) Hellgrammite Adult

Lateral view of a Female Chauliodes rastricornis (Corydalidae) (Fishfly) Hellgrammite Adult from Devil's Creek in Wisconsin

11
Female Isonychia (Slate Drake) Mayfly Spinner

Artistic view of a Female Isonychia (Isonychiidae) (Slate Drake) Mayfly Spinner from the Teal River in Wisconsin

5
Dibusa angata (Microcaddis) Caddisfly Adult

Lateral view of a Dibusa angata (Hydroptilidae) (Microcaddis) Caddisfly Adult from Spring Creek in Wisconsin

I'm tentatively classifying this one as Dibusa angata because I cannot see any ocelli in my dorsal view of the head (and because it has a single spur on each front tibia). However, sometimes they can be difficult to spot when obscured behind setae in general, so I'm not 100 % sure on this one. If there are ocelli I missed, then based on ranges and colors the genus ought to be Stactobiella.

10
Female Clioperla clio (Clio Stripetail) Stonefly Adult

Lateral view of a Female Clioperla clio (Perlodidae) (Clio Stripetail) Stonefly Adult from Devil's Creek in Wisconsin

7
Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner

Lateral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

I only caught a couple of these, and they were both females, so I'm not sure I'll be able to identify it any further.

8
Male Stenonema modestum (Cream Cahill) Mayfly Spinner

Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin

5
Female Siphlonurus (Gray Drake) Mayfly Spinner

Lateral view of a Female Siphlonurus (Siphlonuridae) (Gray Drake) Mayfly Spinner from Devil's Creek in Wisconsin

Egg-laying females of this species were the most noticeable insect over the water at dusk on this small trout stream in Wisconsin's Blue Hills. I caught several of them along with one male netted in mid-air mated to one of the females.

12
Male Siphlonurus (Gray Drake) Mayfly Spinner

Lateral view of a Male Siphlonurus (Siphlonuridae) (Gray Drake) Mayfly Spinner from Devil's Creek in Wisconsin

Egg-laying females of this species were the most noticeable insect over the water at dusk on this small trout stream in Wisconsin's Blue Hills. I caught several of them and photographed one, but this was the only male, netted in mid-air mated to one of the females.

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