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.

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

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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.

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Ephemerella subvaria (Hendrickson) Mayfly Nymph Pictures

I've never seen this strange coloration on any Ephemerella subvaria nymph in a book before, but it's similar to several other specimens I collected on the same outing, including a smaller one that I photographed. They were outnumbered by the "normal" Ephemerella subvaria nymphs in the sample.

Ventral view of a Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Nymph from Salmon Creek in New York

Dorsal view of a Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Nymph from Salmon Creek in New York

Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Nymph from Salmon Creek in New York

This mayfly was collected from Salmon Creek in New York on March 29th, 2006 and added to Troutnut.com by Troutnut on April 7th, 2006.

Discussions of this Nymph

Has anyone else seen a Hendrickson nymph like this?

14 replies

Posted by Troutnut on Oct 31, 2006

Last reply on Mar 19, 2010 by Backcast

I found a few of these this spring in just one small Finger Lakes tributary, mixed in with various normal-looking E. subvaria nymphs. The unusual characteristic is the pale prothorax -- the "white collar" segment just behind the head. I've never heard of that color configuration before. Has anyone else?

Maybe they're mayfly clergy...

Hendrickson nymph

3 replies

Posted by Martinlf on Dec 23, 2006

Last reply on Dec 27, 2006 by GONZO

This photo shows the light band on the top of the subvaria nymph. The lighter collar seems to be abnormal, or at least an unusual color variation, if I remember the previous discussion on this photo.

I just noted the photo of the bug's belly. It appears solid brown, much to my surprise. Hmm. . . Gonzo? I believe he's away for the holidays, but I'll be interested in his answer on imitating this and other nymphs.

I've navigated away from the photo of the subvaria's underwater on the rock, but they are awesome too.

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