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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This species was fairly abundant in a February sample of the upper Yakima.
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Millcreek on Oct 13, 2014October 13th, 2014, 10:13 am EDT
Serratella micheneri nymphs are common in the Russian River from April through May. Most are found in glides with a substrate of large gravel and cobble in a moderate current. Usually found in large numbers on single rocks. I ID'd them to genus using Merritt, Cummins and Berg (2008) and to species with Allen and Edmunds "A Revision of the Genus Ephemerella (Ephemeroptera: Ephemerellidae). VI. The Subgenus Serratella in North America" (1963)http://www.ephemeroptera-galactica.com/pubs/pub_a/puballenr1963p583.pdf and Jacobus and McCafferty "Revisionary Contributions to North American Ephemerella and Serratella (Ephemeroptera: Ephemerellidae) (2003)http://www.ephemeroptera-galactica.com/pubs/pub_j/pubjacobusl2003p174.pdf.
Nymphs are 5-7 mm in length (excluding cerci).
Nymphs are 5-7 mm in length (excluding cerci).
"If we knew what it was we were doing, it would not be called research, would it?"
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-Albert Einstein
PaulRoberts on Oct 13, 2014October 13th, 2014, 3:49 pm EDT
Wow! Pretty critters they are.
Millcreek on Oct 13, 2014October 13th, 2014, 4:40 pm EDT
Paul-
Yeah, they are pretty little varmints and like a lot of animals that have a pattern that's broken up like this they're really well camouflaged when in their regular habitat and not in a petri dish. Hope to get some photos of them on rocks next year.
Have you seen these in Colorado? Apparently they've been reported there, as well as a number of other western states.
Yeah, they are pretty little varmints and like a lot of animals that have a pattern that's broken up like this they're really well camouflaged when in their regular habitat and not in a petri dish. Hope to get some photos of them on rocks next year.
Have you seen these in Colorado? Apparently they've been reported there, as well as a number of other western states.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
-Albert Einstein
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