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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Stenacron
Photo#489266
Mayfly, downtown Philadelphia - Stenacron
Copyright © 2011 Kenneth D. Frank

Mayfly, downtown Philadelphia - Stenacron
Philadelphia, Philadelphia County, Pennsylvania, USA
June 21, 2010

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Contributed by Kenneth D. Frank on 6 February, 2011 - 10:33pm
Last updated 7 February, 2011 - 10:10am

Moved
Moved from Mayflies.
… Roger Rohrbeck, 7 February, 2011 - 10:10am login or register to post comments

Heptageniid, probably Stenacron
Kenneth-

Nice photo. It's a male imago of family Heptageniidae. Although your photo doesn't offer a good angle for examining wing venation, I believe it to be of genus Stenacron, where I will place it, at least until Lloyd Gonzales has had an opportunity to send me his comments.
… Roger Rohrbeck, 7 February, 2011 - 12:45am login or register to post comments

 
Heptageniid
I retrieved a lateral view, which I've added.
… Kenneth D. Frank, 7 February, 2011 - 5:20am login or register to post comments

 
Stenacron
Kenneth-

Ah yes, that dash in the radial space at bulla of the forewing venation confirms Stenacron. Suspected I was seeing it from the dorsal view as well, but your lateral views nailed it.
… Roger Rohrbeck, 7 February, 2011 - 10:09am login or register to post comments

 
Stenacron
I appreciate your examining the additional photos.
… Kenneth D. Frank, 7 February, 2011 - 11:47am login or register to post comments

 
Heptageniid
Thank you! Next time I will try go get a lateral view.
… Kenneth D. Frank, 7 February, 2011 - 4:59am login or register to post comments

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