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 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.
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A few good small creek bugs
A few good small creek bugs
By Troutnut on June 12th, 2022
I was traveling on the east side of the Cascades today, where all the rivers are ridiculously high from a combination of snowmelt and rain. It's dangerous to even get in the water. But I found a place to sample a few bugs in a small creek and added a couple stoneflies from my to-do list.
Closeup insects by Troutnut from Swauk Creek in Washington
I'm not aware of any way to tell the two species of Doroneuria apart as nymphs, so this one is classified to species based on location alone. Doroneuria baumanni is found in the Cascades and in Washington, and the other species is not known here yet.
This one doesn't have the protruding mouthparts typical of Cinygmula, but I think it's just an oddball individual.
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Aug 9, 2012
by Sayfu
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