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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
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.

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Acroneuria abnormis (Golden Stone) Stonefly Nymph Pictures

Ruler view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania The smallest ruler marks are 1 mm.
Ventral view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Dorsal view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Lateral view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Perlid stonefly nymph. A stonefly nymph crawls along the river rocks

Artistic view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania
Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

This stonefly was collected from Paradise Creek in Pennsylvania on May 29th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

Discussions of this Nymph

Hate to do this again....
5 replies
Posted by PeterO on Jun 6, 2007
Last reply on Oct 1, 2010 by GONZO
Jason-

This is actually a specimen of Acroneuria abnormis. Paragnetina species have a complete set of spinules/setae on the occiput, which this guy is lacking. On a semi-related subject, could you forward me the collection data for the Arcynopteryx paralella you got from the Catskills? Thanks a bunch.

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References

Acroneuria abnormis (Golden Stone) Stonefly Nymph Pictures

Collection details
Location: Paradise Creek, Pennsylvania
Date: May 29th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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