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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Heptagenioidea » Flatheaded Mayflies (Heptageniidae) » Maccaffertium » Maccaffertium terminatum
Photo#1077424
Mayfly - Maccaffertium terminatum - male
Copyright © 2015 Jon Rapp

Mayfly - Maccaffertium terminatum - Male
Rock Bridge State Park - High Ridge Trail, Boone County, Missouri, USA
May 31, 2015
Can this Mayfly be identified to species? Also, this is a dumb question, but what, if any, is the significance of the solid white eyes? They all don't have white eyes, or is this just a phase of its life cycle when they turn white?

Much Thanks!
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Contributed by Jon Rapp on 2 June, 2015 - 8:42pm
Last updated 3 June, 2015 - 7:28am

Moved
Moved from Mayflies.
… Roger Rohrbeck, 3 June, 2015 - 4:31am login or register to post comments

Maccaffertium terminatum
Hi Jon-

I believe this male imago to be Maccaffertium terminatum. As to your question about eye color, under certain light conditions the eyes of a genus Maccaffertium male imago will floresce, which can change their appearance from black to a brilliant white.
… Roger Rohrbeck, 3 June, 2015 - 4:28am login or register to post comments

 
Much Thanks Roger!
.
… Jon Rapp, 3 June, 2015 - 7:28am login or register to post comments

heptageniid of sorts, male imago; Roger will tell
Moved from ID Request.
… v belov, 2 June, 2015 - 8:44pm login or register to post comments

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