Header image
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.

Mayfly Species Hexagenia atrocaudata (Late Hex)

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

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.

Specimens of the Mayfly Species Hexagenia atrocaudata

2 Male Spinners
1 Female Dun
Female Hexagenia atrocaudata (Late Hex) Mayfly Dun
I 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.

Comment on Hexagenia atrocaudata:

You can quickly and easily register to post comments.

References

Taxonomy
Species Range
Resources
Troutnut.com is copyright © 2004-2022 (email Jason). privacy policy