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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Stenacron » interpunctatum complex (Stenacron interpunctatum complex) » Stenacron interpunctatum
Photo#1250167
Ephemeroptera - Stenacron interpunctatum
Copyright © 2016 Alain Hogue

Ephemeroptera - Stenacron interpunctatum
Chateauguay, Quebec, Canada
May 28, 2016
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Contributed by Alain Hogue on 2 July, 2016 - 6:21pm
Last updated 6 January, 2017 - 8:07pm

Moved
Moved from Flatheaded Mayflies.
… Roger Rohrbeck, 6 January, 2017 - 8:07pm login or register to post comments

Stenacron
It would be nice to be able to see the dash in the forewing for greater confirmation but i can identify it without that marking. This is one of the oddly marked ones as far as maculation density. However the clypeus and frontal margin of the head are Stenacron. It also has a black dash below the antenna base. I do see black staining on the pronotum, and pleura streaks. The heavy medial abdominal stripe, faded spiracular spots, and median line on the notum all point to (Stenacron interpunctatum / Frontale) female imago.

I will also add, the yellow longitudinal forewing veins are a Stenacron feature and so are the heavy black cross-veins in the subcostal area above the humeral vein.


Mack.
… The Stenonema Rangers of Ontario, 6 January, 2017 - 7:27pm login or register to post comments

 
Thanks for sharing your analy
Thanks for sharing your analysis. Very instructive !
… Alain Hogue, 7 January, 2017 - 10:15am login or register to post comments

 
Thanks, Mack.
Thanks, Mack.
… Roger Rohrbeck, 6 January, 2017 - 8:06pm login or register to post comments

Moved
Moved from Mayflies.
… Roger Rohrbeck, 3 July, 2016 - 1:49am login or register to post comments

Heptageniidae
Hi Alain-

I believe this female imago to be of family Heptageniidae.
… Roger Rohrbeck, 3 July, 2016 - 1:49am login or register to post comments

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