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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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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This topic is about the Mayfly Family Leptohyphidae

Read about the Tricorythodes genus for details. It is very important to trout anglers and it's the only significant trout stream genus in this family.

Most of the other genera are found only in warm waters in Mexico and the Southwest.

Example specimens

Doublezz105
Posts: 4
Doublezz105 on Oct 29, 2009October 29th, 2009, 10:46 am EDT
I have two keys (Pekarsky et al and Merrit and Cummins) listing Tricorythodes in the tricorythidae family, but Troutnut and Voshell show tricorythodes in the leptohyphidae family. Has tricorythodes been moved to leptohyphidae or vice versa?
Taxon
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Site Editor
Plano, TX

Posts: 1311
Taxon on Oct 29, 2009October 29th, 2009, 11:58 am EDT
Doublezz105: I have two keys (Pekarsky et al and Merrit and Cummins) listing Tricorythodes in the tricorythidae family, but Troutnut and Voshell show tricorythodes in the leptohyphidae family. Has tricorythodes been moved to leptohyphidae or vice versa?


I believe acceptance of family Leptohyphidae dates to 2000, as described in Generic Revision of the North and Central American Leptohyphidae (Ephemeroptera: Pannota) by Wiersema and McCafferty.

The publication date of Aquatic Insects Of North America (Third Edition) by Merritt and Cummins is 1997. And, Freshwater macroinvertebrates of Northeastern North America by Pekarsky et al was published in 1990. So, both publications would have still listed genus Tricorythodes under family Tricorythidae.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Konchu
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Site Editor
Indiana

Posts: 498
Konchu on Oct 30, 2009October 30th, 2009, 5:33 am EDT
taxon, check out mccafferty and wang's 2000 paper about pannote mayflies; they should give a history of the family leptohyphidae in there
Doublezz105
Posts: 4
Doublezz105 on Oct 30, 2009October 30th, 2009, 5:46 am EDT
Thanks so much for the speedy responses. And a special thanks for the link to the Wiersema & McCafferty paper. I thought it might be a taxonomy change since the publication of the keys, but I figured I'd check with some experts!

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