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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.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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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Ameletus ludens (Brown Dun) Mayfly Nymph Pictures

Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York
Ventral view of a Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York
Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York
Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York
Dorsal view of a Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York
Ruler view of a Ameletus ludens (Ameletidae) (Brown Dun) Mayfly Nymph from Mongaup Creek in New York The smallest ruler marks are 1 mm.

This mayfly was collected from Mongaup Creek in New York on May 6th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.


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Ameletus ludens (Brown Dun) Mayfly Nymph Pictures

Collection details
Location: Mongaup Creek, New York
Date: May 6th, 2007
Added to site: May 18th, 2007
Author: Troutnut
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