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Ephemerella subvaria (Hendrickson) Mayfly Nymph Pictures

 I've never seen this strange coloration on any Ephemerella subvaria nymph in a book before, but it's similar to several other specimens I collected on the same outing, including a larger one that I photographed. They were outnumbered by the "normal" Ephemerella subvaria nymphs in the sample.

This mayfly was collected from Salmon Creek on March 29th, 2005 and added to Troutnut.com on April 7th, 2006.

Recent Discussions of this Nymph

I have a question 4 Replies »
Posted by Brookyman on Mar 8, 2013
Last reply on Mar 8, 2013 by Brookyman
Why is it on some of the subvaria the pronotum is clear or whitish. Is that part of the
molting process on them ??? And why does it not happen on other Ephemerella's ???


Mack.
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