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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.

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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Baetis flavistriga (Dark Blue-Winged Olive) Mayfly Nymph Pictures

This specimen keys to the Baetis flavistriga complex, which could be either flavistriga or Baetis phoebus.

Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho
Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho
Dorsal view of a Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho
Ruler view of a Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho The smallest ruler marks are 1 mm.
Ventral view of a Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho

This mayfly was collected from the East Fork Big Lost River in Idaho on August 3rd, 2020 and added to Troutnut.com by Troutnut on August 19th, 2020.


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Baetis flavistriga (Dark Blue-Winged Olive) Mayfly Nymph Pictures

Collection details
Location: East Fork Big Lost River, Idaho
Date: August 3rd, 2020
Added to site: August 19th, 2020
Author: Troutnut
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