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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Maccaffertium » Maccaffertium vicarium
Photo#1379170
Mayfly - Maccaffertium vicarium
Copyright © 2017 Lisa I.

Mayfly - Maccaffertium vicarium
Indian Creek, Letcher County, Kentucky, USA
June 3, 2017
Found hanging on a rock.
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Contributed by Lisa I. on 4 June, 2017 - 8:17am
Last updated 4 June, 2017 - 7:48pm

Moved
Moved from Mayflies.
… Roger Rohrbeck, 4 June, 2017 - 7:48pm login or register to post comments

Maccaffertium
The forward notum shape aligns with Maccaffertium but which one is the big question. It is an extremely dark sample and likely from a very dark substrate in the stream. I put the location in google maps and the sea level elevation is

approximate elevation is 1,201 feet (366 meters) above sea level.

so fairly high suggesting the creeks substrate is darker and well shaded that would account for a very dark larva thus making a very dark adult.

This could fall to pudicum but the crossviens in the bulla area do not align with each other. It is to dark for carlsoni in the abdomen, this leaves us with possible vicarium. However one striking feature is how low the stigma stains is. For now let's place it as vicarium and if I think of something else I will post.



Mack.

.
… The Stenonema Rangers of Ontario, 4 June, 2017 - 4:28pm login or register to post comments

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