Flat-headed Mayfly - Maccaffertium smithae - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Maccaffertium » Maccaffertium smithae

Photo#506652

Copyright © 2011 Robert Lord Zimlich

Flat-headed Mayfly - Maccaffertium smithae -

Opelika, Lee County, Alabama, USA
April 16, 2011

I can't make heads'r'tails from Browse. Thanks for any help.
EDIT: Adds new species for Bugguide

Images of this individual: tag all

Flat-headed Mayfly - Maccaffertium smithae - female

Flat-headed Mayfly - Maccaffertium smithae - female

Flat-headed Mayfly - Maccaffertium smithae - female

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Contributed by Robert Lord Zimlich on 17 April, 2011 - 7:52pm
Last updated 17 April, 2015 - 12:36pm

Moved

Moved from Maccaffertium.

… Roger Rohrbeck, 17 April, 2015 - 11:58am

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Thanks

Thanks Mack and Roger. I added the guide page just in time. Thanks

… Robert Lord Zimlich, 17 April, 2015 - 12:15pm

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Maccaffertium smithae

From everything I have read the only possible species that fits this sample is (Maccaffertium smithae) it also has the right geographical range.
The fact that the spiracular spots are well above the spirical folds and it has the median tergite longitudinal line point to that species.

Mack

… The Stenonema Rangers of Ontario, 17 April, 2015 - 10:33am

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Moved

Moved from Stenacron.

… Roger Rohrbeck, 2 January, 2015 - 10:53pm

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Not Stenacron

I am unsure of species but this is not a Stenacron. Granted the bulla is very dark and makes it appear as a black dash. It looks like Maccaffertium rather than any other genus. If it lacked the median dorsal stripe in the abdomen it would align very nicely with Maccaffertium mediopunctatum. No Stenacron have a gray notum and this lacks the black marks that would be present in a Stenacron sample with this dark of a abdomen. This one is without question an interesting sample and I am only very sure that is not a Stenacron.

Mack.

… The Stenonema Rangers of Ontario, 2 January, 2015 - 8:07pm

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Moved

Moved from Mayflies.

… Roger Rohrbeck, 18 April, 2011 - 11:18am

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Stenacron

This appears to be a Stenacron female imago.

… Roger Rohrbeck, 18 April, 2011 - 11:16am

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