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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

Stream photos

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Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva

Lateral view of a Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.

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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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Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jul 24, 2006July 24th, 2006, 6:35 am EDT

In Caddisflies, LaFontaine mentions Neophylax as a member of the Limnephilidae family. The family Uenoidae is in the same superfamily as Limnephilidae, so I'm wondering if it was a recent split and all the genera used to be in Limnephilidae. I couldn't find anything in a quick web search... anybody know?

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Jul 24, 2006July 24th, 2006, 9:45 am EDT

Jason-

From Ethan Bright's website:

-----
Uenoidae Iwata, 1927

Introduction

This family was previously placed in the family Limnephilidae (Neophylacinae), but later work by Wiggins and others argued effectively for family elevation. Uenoidea comprises 7 genera of which 5 are found in the Nearctic, and 2 in MIchigan. Oligophleboides is principally a western taxa of cool, rapidly flowing streams, and has only rarely been recorded from northern Michigan. Neophylax, on the other hand, is widespread and common in cold to cool lotic waters.
-----

EDIT:
Although I don't know for sure, I would guess this happened shortly after publication of Caddisflies, as I don't believe it was recent, and Gary LaFontaine's taxonomy was heavily verified by the scientific community.

EDIT:
Okay, I found it: WIGGINS & AL. Revision of the Caddisfly family Uenoidae (Trichoptera)
- 1985 - 38 p - 62 figs

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jul 24, 2006July 24th, 2006, 10:53 am EDT

Thanks! I'll update the article to reflect this.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist