Mayfly nymph, Heptageniidae - BugGuide.Net

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Photo#1004755

Copyright © 2014 Robert Gillespie

Mayfly nymph, Heptageniidae

North Bear Creek, Winneshiek County, Iowa, USA
September 28, 2014
Size: 5mm

The specimen was found under a rock in North Bear Creek. Several of this type were found but this was one of the largest. It has three tails.

Contributed by Robert Gillespie on 2 October, 2014 - 10:09pm
Last updated 9 November, 2014 - 10:02pm

Maccaffertium

Maccaffertium and likely vicarium based on the shovel shaped head the orange unbanded tails and the black transverse band crossing over the 10th tergite.

… The Stenonema Rangers of Ontario, 18 November, 2015 - 6:13pm

Moved

Moved from Mayflies.

… Roger Rohrbeck, 9 November, 2014 - 10:02pm

Heptagehiidae

Hi Robert-

Katie has correctly identified this mayfly nymph as being a of family Heptageniidae, and I further suspect it to be of genus Maccaffertium.

… Roger Rohrbeck, 9 November, 2014 - 10:01pm

Moved

Moved from ID Request.

… john and jane balaban, 9 November, 2014 - 5:31pm

Family Heptageniidae

Looks to be in the mayfly family Heptageniidae:
http://bugguide.net/node/view/22105

… Katie C, 7 October, 2014 - 2:30pm

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