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 was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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By Bnewell on July 18th, 2012, 9:27 am EDT
This stonefly is one that is fairly common in higher altitude lakes, especially in western North America. I have collected it in higher lakes in Glacier National Park, Montana. Dick Baumann tells me that in a recent publication this stonefly has been renamed Skwala compacta.
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Taxon on Jul 19, 2012July 19th, 2012, 7:45 pm EDT
Hi Bob,
When checking out Skwala compacta, I noticed that the Valid Stonefly Names for North America list maintained by Ed DeWalt has not been updated since 3/19/2009. Do you have any insight into why that might be?
When checking out Skwala compacta, I noticed that the Valid Stonefly Names for North America list maintained by Ed DeWalt has not been updated since 3/19/2009. Do you have any insight into why that might be?