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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Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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Troutnut on Oct 23, 2006October 23rd, 2006, 5:43 pm EDT
I just (mostly) finished programming the code I need to quickly move topics from one part of this forum to another. That's one of the administrative tools I left out in order to finish the overall site more quickly.
Anyway, if you come to one of the sections looking for a topic you've written and it's not there, it was probably just moved to a more fitting section. I haven't removed anything yet; it's all just been re-filed.
I'm trying to keep topics about a specific hatch in the "Fly Hatch Talk" forum listed under the correct taxon, so that people browsing the page for that hatch in the "Aquatic Insects" section can see the discussion. Topics about a specific specimen go with that specimen discussion, and general topics go in this general discussion section.
I had sort of hoped to make it clear and intuitive enough that people would post everything in the right section on their own, and in most cases that's happened, but I've had a surprising amount of manual reorganizing to do. If anybody has an idea for making the topic section thing more intuitive, feel free to post it.
Anyway, if you come to one of the sections looking for a topic you've written and it's not there, it was probably just moved to a more fitting section. I haven't removed anything yet; it's all just been re-filed.
I'm trying to keep topics about a specific hatch in the "Fly Hatch Talk" forum listed under the correct taxon, so that people browsing the page for that hatch in the "Aquatic Insects" section can see the discussion. Topics about a specific specimen go with that specimen discussion, and general topics go in this general discussion section.
I had sort of hoped to make it clear and intuitive enough that people would post everything in the right section on their own, and in most cases that's happened, but I've had a surprising amount of manual reorganizing to do. If anybody has an idea for making the topic section thing more intuitive, feel free to post it.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Troutnut and salmonid ecologist
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