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 seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.
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Golden Drakes
This name usually refers to the species Anthopotamus distinctus.
This common name refers to only one family. Click its scientific name to learn more.
Mayfly Family Potamanthidae
These are pretty much always called Golden Drakes.
See the genus Anthopotamus for details. It is the only North American genus in this family. Anthopotamus distinctus is its most important species.
Many anglers still know it as Potamanthus, but that name is outdated.
Many anglers still know it as Potamanthus, but that name is outdated.