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

Photo#655262

Copyright © 2012 Nancy Kent

Mayfly - Stenacron -

Wildwood Park; Radford, Virginia, USA
June 10, 2012

I'd like an ID, please.
I do think that this is a male. I'm sorry that the image is not sharp.

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Contributed by Nancy Kent on 10 June, 2012 - 10:37pm
Last updated 28 May, 2020 - 10:28pm

Moved

Moved from Flatheaded Mayflies.

… Roger Rohrbeck, 2 July, 2014 - 1:26am

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Moved

Moved from Mayflies.

… Roger Rohrbeck, 11 June, 2012 - 8:36pm

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Heptageniid

Hi Nancy-

I believe this male subimago to be either Stenonema or Maccaffertium. However, being unable to determine which, it is being placed in the guide at family level, at least for now.

… Roger Rohrbeck, 11 June, 2012 - 8:35pm

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for the sake of placement

Hi Roger sorry to hit on a older one.

I think this is a Stenacron and should be moved to that genus based on things I see when enlarging the photo. Although it is tough to make out because the subimago wing cover clouds the view. But I clearly see the trade mark black dash's present in the forewing between the R1 & R2. Also the subcoastal and coastal crossveins from the bulla to the humeral vein are marked in the classic diamond shape pattern only found in Stenacron. Although some Maccaffertium have shaded hind wings adding that to the about makes me think this one is most likely Stenacron IMO.

Mack

… The Stenonema Rangers of Ontario, 2 July, 2014 - 12:57am

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Thanks!

I appreciate the detailed ID info.

… Nancy Kent, 2 July, 2014 - 3:53pm

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Your both welcome

If you had other photo angles & size we many have been able to go a little farther.

Mack.

… The Stenonema Rangers of Ontario, 2 July, 2014 - 4:18pm

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Stenacron

Thanks, Mack.

… Roger Rohrbeck, 2 July, 2014 - 1:24am

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Thanks,

Roger, I'm very pleased to know family! I'm also pleased that I could ID gender - seems easy for experts but we beginners get confused easily:>)

… Nancy Kent, 11 June, 2012 - 9:50pm

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