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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Epeorus
Photo#1244551
unknown clinger mayfly nymph - Epeorus
Copyright © 2016 bmoody9

unknown clinger mayfly nymph - Epeorus
Small mountain creek in Teton Mountains, Teton County, Wyoming, USA
June 23, 2016
Size: about 10 mm
looks to be some sort of clinger mayfly but all the western stream bug books have nothing like it (I think all three are the same species, they have lost a bit of color after 2 days in alcohol). These things were under every rock on a small stream in the Tetons, northwest WY on June 23, 2016. Any ideas?
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Contributed by bmoody9 on 23 June, 2016 - 11:36pm
Last updated 26 June, 2016 - 8:59pm

Moved
Moved from Mayflies.
… Roger Rohrbeck, 26 June, 2016 - 8:59pm login or register to post comments

two caudal filaments
If they only have two tails (caudal filaments) they are probably an Epeorus species. The only other possibility is Ironodes but the overall body shape is more like Epeorus.
… Mark Melton, 24 June, 2016 - 5:29pm login or register to post comments

Moved
Moved from ID Request.
… metrioptera, 24 June, 2016 - 7:01am login or register to post comments

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