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Mayfly Species Hexagenia atrocaudata (Late Hex)

Pictures Below
This species is slightly smaller than Hexagenia limbata and it occurs later in the year. It is only mentioned in passing by a few authors, but it can be locally important.  

Where & When

Regions: East, Midwest

Time Of Year (?): July and August

I have heard rumors of fishable hatches of this species in both Wisconsin and the Catskills. The duns and spinners have been a common sight for me on several Wisconsin rivers during August, but they have been too sparse to cause good rises.

I have had some luck with an imitation. Last year a very nice smallmouth bass rose to my atrocaudata spinner pattern as subtly as any trout.

Pictures of 3 Mayfly Specimens in the Species Hexagenia atrocaudata:

Female Hexagenia atrocaudata (Late Hex) Mayfly DunFemale Hexagenia atrocaudata (Late Hex) Mayfly Dun View 14 PicturesI found this lone Hexagenia atrocaudata dun fluttering by herself on the surface of a small, still stretch of river one evening as I paddled home from fishing for smallmouths in the warm August weather.
Collected August 5, 2005 from the Teal River in Wisconsin
Added to by Troutnut on April 14, 2006
Male Hexagenia atrocaudata (Late Hex) Mayfly SpinnerMale Hexagenia atrocaudata (Late Hex) Mayfly Spinner View 3 PicturesI found this spinner and a few of his friends bobbing above the river amidst a snowstorm hatch of white Ephoron flies.
Collected August 15, 2004 from the Namekagon River in Wisconsin
Added to by Troutnut on January 25, 2006

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