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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 Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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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Empididae True Fly Adult Pictures

I'm not fully confident in the ID on this one. I couldn't see for sure that there are two equal pads under the tarsal claws instead of three, but it seems that way. The antennae are 4-segmented, although I'm not sure if the last segment counts as a "segment" rather than a style@ or arista sticking off the third segment. It has three ocelli. The key characteristics generally point to Empididae except "Vein R4+5 usually branched." That vein certainly isn't branched in this specimen, but the key does say "usually."

Ventral view of a Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Lateral view of a Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Dorsal view of a Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Ruler view of a Empididae True Fly Adult from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington
Empididae True Fly Adult from the South Fork Snoqualmie River in Washington

This true fly was collected from the South Fork Snoqualmie River in Washington on May 22nd, 2022 and added to Troutnut.com by Troutnut on May 24th, 2022.


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Empididae True Fly Adult Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: May 22nd, 2022
Added to site: May 24th, 2022
Author: Troutnut
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