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.
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I was surprised how bright green this pupa is. It's chartreuse. After collecting it, I experimented with melting down chartreuse jigs and making little translucent rubber caddis abdomens on my flies. They looked good, and the trout liked them, but they weren't very durable at all. This specimen is recently deceased in the photographs.
Litobrancha on Sep 23, 2006September 23rd, 2006, 10:55 am EDT
This is cheumatopsyche female. note at the posterior end of the abdomen the two semi-rectangular plates that are distinct to the base, that is a good diagnostic for cheumatopsyche.
[edited by Troutnut: added title]
[edited by Troutnut: added title]