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Baetis

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.

Acroneuria abnormis (Golden Stone) Stonefly Nymph Pictures

This stonefly was collected from Fall Creek in New York on March 29th, 2005 and added to Troutnut.com by Troutnut on April 6th, 2006.

Discussions of this Nymph

Probably Acroneuria lycorias
1 replies
Posted by GONZO on Oct 10, 2006
Last reply on Oct 28, 2008 by GONZO
I've been staring at this one for quite some time. My first impression was lycorias (Boreal Stone, Giant Brown Stonefly). I'm pretty familiar with this species, but I don't know of a good key to Acroneuria at the species level.

The lack of a row of spinules along the occiput of the head and presence of postocular and pronotal fringes all say Acroneuria for sure.

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