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Blue-winged Olives

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.

Female Ephemerella invaria (Sulphur) Mayfly Dun Pictures

This mayfly was collected from unknown in Wisconsin on May 23rd, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Dun

Another sulphur for comment
1 replies
Posted by Martinlf on Aug 17, 2007
Last reply on Aug 21, 2007 by Gene
And this one, also from the midwest, is more green than the sulphurs I recall seeing this season. My limited experience in PA streams suggests that many, if not most, of the sulphurs here are best imitated by pale yellow, bright yellow, or orange bodies. Gene, and others, am I far off?

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