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Ephemerella aurivillii Mayfly Nymph Pictures

 This specimen was collected together with a darker one of the same species.

This mayfly was collected from Mongaup Creek on April 19th, 2006 and added to Troutnut.com on April 21st, 2006.

The whorls of spines around the tail segments on this nymph had me thinking it was in the closely related Serratella genus for a while, but this close-up picture reveals the web of fine setae that sets the Ephemerella genus apart.  Ephemerella aurivillii Mayfly Nymph from Mongaup Creek in New York
The whorls of spines around the tail segments on this nymph had me thinking it was in the closely related Serratella genus for a while, but this close-up picture reveals the web of fine setae (Seta: Little hairs on insects.) that sets the Ephemerella genus apart.

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