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Baetis (Blue-Winged Olives) Mayfly Nymph Pictures

This mayfly was collected from Cayuta Creek on April 14th, 2007 and added to on April 22nd, 2007.

Recent Discussions of this Nymph

Baetidae 4 Replies »
Posted by Earlfishman on Apr 23, 2007
Last reply on Apr 24, 2007 by Konchu
This one looks like an almost ready to emerge male Baetis sp., but I can't be 100% based on the pictures and I definitely can't go any further than that.

As a side note, if anyone is interested in a good key to the larvae of Baetidae, search google for "EPA photographic Baetidae key" and click on the PDF at the EPA site (direct link to the PDF here). The key has some good photos and works very well for the eastern U.S.

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