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Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

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Male Afghanurus inconspicua Mayfly Dun Pictures

This pretty little dun was part of a sparse midsummer evening hatch on a large Catskill river.

I could not identify it by following a species key step by step, but I tentatively keyed it to the genus Nixe, and based on distribution maps and physical descriptions the most likely species is Nixe inconspicua. (Edit in 2023: this species was recently moved from Nixe into Afghanurus.)

This mayfly was collected from the East Branch of the Delaware River in New York on July 13th, 2005 and added to Troutnut.com by Troutnut on April 14th, 2006.

Discussions of this Dun

Maybe Epeorus
16 replies
Posted by Troutnut on Jul 5, 2006
Last reply on Sep 22, 2011 by Oldredbarn
I'll have to revisit the identification on this one. Originally the fore tarsal ratio made me think it's not Epeorus, but the unmarked wings, costal wing venation, and contiguous eyes now make me think otherwise.

Start a Discussion of Dun

Male Afghanurus inconspicua Mayfly Dun Pictures

Collection details
Location: East Branch of the Delaware River, New York
Date: July 13th, 2005
Added to site: April 14th, 2006
Author: Troutnut
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