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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.

Ephemerella subvaria (Hendrickson) Mayfly Nymph Pictures

These are two common color patterns on Hendrickson nymphs. I suspect that one is male and the other female, but I don't know for sure.

This mayfly was collected from the Namekagon River in Wisconsin on January 13th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

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