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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae)
Photo#1569352
Mayfly
Copyright © 2018 Graham Montgomery

Mayfly
Cedar Grove, Fresno County, California, USA
May 29, 2018
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Contributed by Graham Montgomery on 4 August, 2018 - 1:02pm

Heptagenia elegantula
First this female has molted about 4 hours before the photo. There are very clear indications for identification. This matches all my samples and my color Heptagenia illustrations. even though she is small there are plenty of indications. the gills and femora makings are Heptagenia and from the very clear areas where the gills meets indicates one species concept. Heptagenia elegantula, if it got darker full maculation the dark rings would be on the tail joints.
… The Stenonema Rangers of Ontario, 29 February, 2020 - 1:31am login or register to post comments

Moved
Moved from Mayflies.
… Brady Richards, 4 August, 2018 - 1:40pm login or register to post comments

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