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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Furcatergalia » Scapphodonta » Ephemeroidea » Pale Burrower Mayflies (Polymitarcyidae) » White Flies (Ephoron) » White Fly (Ephoron leukon)
Photo#484239
mayflies? - Ephoron leukon - male
Copyright © 2011 Anita Gould

mayflies? - Ephoron leukon - Male
Bainbridge, Lancaster County, Pennsylvania, USA
July 14, 2007
Huge swarm of these down by the Susquehanna River bank at night. They are able to fold their wings (see below), but they sure look like mayflies rather than stoneflies or somesuch. Can they be IDed to species or genus?

More from the same swarm:
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Contributed by Anita Gould on 9 January, 2011 - 4:58pm
Last updated 10 January, 2011 - 6:59pm

Moved
Moved from Mayflies.

I'm no expert on adult mayflies, but I'm pretty certain these are Ephoron leukon.
… Brady Richards, 10 January, 2011 - 11:08am login or register to post comments

 
Superb
thank you! They were so abundant I would have expected pages & pages of them on BugGuide -- but I guess there's a big difference between abundance within a swarm and abundance of swarms. :-)
… Anita Gould, 10 January, 2011 - 7:05pm login or register to post comments

 
thanks again, Brady
… v belov, 10 January, 2011 - 11:12am login or register to post comments

suspected Ephoron male imagoes
a burrower anyway; pls wait for the experts
… v belov, 9 January, 2011 - 5:28pm login or register to post comments

Moved for expert attention
Moved from ID Request.
… Ken Wolgemuth, 9 January, 2011 - 5:09pm login or register to post comments

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