Troutnut Forum > Specimen Discussion > S. interpunctatum
The Specimen
Stenacron interpunctatum (Light Cahill) Mayfly Dun
View 6 PicturesThis is a fairly small late-season female Stenacron dun.
View 6 PicturesThis is a fairly small late-season female Stenacron dun.Region: Northeast
Collected Aug 22, 2006
Added Aug 24, 2006
The Discussion
| Taxon | August 24th, 2006, 3:24 am | |
| Mercer Island, WA Posts: 485 | Looks to be Stenacron interpunctatum (Stenonema heterotarsale). | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
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| Troutnut | August 24th, 2006, 11:29 am | |
| Fairbanks, AK Posts: 1115 | Thanks. I guess that's sort of the default guess. Do you know any reference to rule out the other species of Stenacron? I'll have to check my papers more carefully but I don't think I've found a good one yet. You're probably right just based on distribution and abundance, but I've collected such a wide range of Stenacron specimens (all listed under interpunctatum on this site) that it's hard to believe they're all the same species. | |
| Jason Neuswanger The Troutnut | ||
| Taxon | August 24th, 2006, 3:26 pm | |
| Mercer Island, WA Posts: 485 | Jason- My guess is based on the striking similarity of your photo to the photo labeled "Stenonema heterotarsale, female dun" on Color Plate XI in Hatches II. The wing coloring, venation, and marking are about as close as I've ever seen. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Wiflyfisher | August 24th, 2006, 9:34 pm | |
| Wisconsin Posts: 206 | My guess is based on the striking similarity of your photo to the photo labeled "Stenonema heterotarsale, female dun" on Color Plate XI in Hatches II. The wing coloring, venation, and marking are about as close as I've ever seen. In the past I have caught those same mayflies on the *********** River in NW WI. and came to the same conclusion using photos in Hatches. | |
| John S. http://www.WiFlyFisher.com | ||
| Troutnut | August 24th, 2006, 10:36 pm | |
| Fairbanks, AK Posts: 1115 | My main concern with the identification is that the differences between different Stenacron species may only be discernible in the male spinner forceps or nymph mouth parts or something. I'll try to find a better reference to the genus and figure iout. | |
| Jason Neuswanger The Troutnut | ||
| Taxon | August 24th, 2006, 11:45 pm | |
| Mercer Island, WA Posts: 485 | Jason- Good point. Let me know what you find. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
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