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.

Stream photos

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

11 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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Dolophilodes (Philopotamidae)

Male Dolophilodes distincta (Tiny Black Gold Speckled-Winged Caddis) Caddisfly Adult

6 Pictures

Lateral view of a Male Dolophilodes distincta (Philopotamidae) (Tiny Black Gold Speckled-Winged Caddis) Caddisfly Adult from Mystery Creek #42 in Pennsylvania

This caddis species was dancing high over the stream, spaced a foot or two apart across most of its width, very much like Ephemera mayfly spinners but with more side-to-side motion mixed in. There were more than enough to get the trout interested, but I wasn't able to stick around until they fell on the water (if they did at all).

Collected May 27, 2007 from Mystery Creek #42 in Pennsylvania

Added by Troutnut on June 4, 2007

Collected May 27, 2007 from Mystery Creek #42 in Pennsylvania and added by Troutnut on June 4, 2007

Litobrancha
Knoxville TN

Posts: 51

Litobrancha on Jun 12, 2007June 12th, 2007, 8:04 am EDT

This is a male dolophilodes, probably distinctus.

You can distinguish philopotamids from hydropsychids by the ocellar head warts that are absent in hydropsychids.

D. distinctus is everywhere, along with Oecetis inconspicua, including perhaps the moon, inner four planets and in orbit. it is a beautiful insect however.

Troutnut