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Male Eurylophella (Chocolate Duns) Mayfly Spinner Pictures

This mayfly was collected from the Namekagon River on June 3rd, 2005 and added to on May 24th, 2006.

Recent Discussions of this Spinner

Not invaria 2 Replies »
Posted by GONZO on May 24, 2009
Last reply on May 24, 2009 by GONZO
This spinner is Eurylophella rather than E. invaria. The long 9th abdominal segment of Eurylophella is often the easiest way to avoid confusing the duns and spinners with Ephemerella. The claspers and genitalia of this male are also representative of Eurylophella.

ReplyInvaria Spinners 10 Replies »
Posted by Martinlf on Aug 9, 2007
Last reply on Aug 10, 2007 by JAD
These photos show a darker invaria spinner than I'm used to seeing. I know color varies a good bit in invaria nymphs and duns, so I suppose color variation is pretty wide with the spinners also, correct?

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