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 one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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Updates from June 29, 2010
Closeup insects by Bnewell from Rock Creek in Montana
One picture of this specimen shows the spinner stage.
Updates from June 18, 2010
Closeup insects by Bnewell from the Kwethluk River in Alaska
I have collected this species in Montana but it is very common in Alaska streams.
Updates from June 14, 2010
Closeup insects by Bnewell from Miscellaneous Montana and the Flathead River in Montana
Midges of the family Chironomidae are probably the most widespread aquatic insect in the world.
This is a nymph that has recently molted thus has not yet acquired its normal coloration.
Updates from May 14, 2010
Closeup insects by Entoman from the Au Sable River (Mainstream) in Michigan
These photos were contributed by Spencer Vanderhoof.
These photos were contributed by Spencer Vanderhoof.
These photos were contributed by Spencer Vanderhoof.
