Unidentified Freshwater Larva - Maccaffertium terminatum - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Maccaffertium » Maccaffertium terminatum

Photo#913511

Copyright © 2014 AnimalGuy

Unidentified Freshwater Larva - Maccaffertium terminatum

Renton, King County, Washington, USA
April 23, 2014

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Contributed by AnimalGuy on 26 April, 2014 - 3:52pm
Last updated 27 April, 2014 - 12:54am

Roger

I don't think Roger has seen this page yet.

… The Stenonema Rangers of Ontario, 25 April, 2015 - 1:45pm

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Au countraire,

Roger chose remain silent regarding this identification, which was made by (BugGuide Contributing Editor and professional aquatic insect specialist) Brady Richards. I generally defer to Brady's expertise regarding mayfly larval lifestage identifications, and focus on mayfly winged lifestage identifications with which professional aquatic insect specialists tend to be less familiar.

… Roger Rohrbeck, 25 April, 2015 - 4:33pm

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Not maccaffertium

This is not of the genus Maccaffertium the gills are laterally inserted. On Maccaffertium the gills are dorsal-laterally inserted.
The maculation pattern, gills, and general shape suggest Nixe. Being a freshly molted sample makes it tough to be sure.
It may be other than Nixe but it is not Maccaffertium.

Looking at Webb & McCafferty 2011 for Nixe based on the maculation tergite pattern I would go with (Nixe flowersi) as a species.

Mack.

… The Stenonema Rangers of Ontario, 19 April, 2015 - 6:03pm

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Sort it out ...

Mack, since I depend on you and Roger for mayfly IDs, I'm going to let you two sort this one out.
ಠ‿ಠ

… Robert Lord Zimlich, 25 April, 2015 - 1:42pm

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Moved

Moved from Mayflies.

… Roger Rohrbeck, 27 April, 2014 - 12:54am

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McCaffertium terminatum

-
Based on the shape of the gills. Teneral specimen.

… Brady Richards, 26 April, 2014 - 10:38pm

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Moved

Moved from ID Request.

… v belov, 26 April, 2014 - 4:12pm

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