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Female Sweltsa fidelis (Sallfly) Stonefly Adult Pictures

 In Baumann's Stoneflies of the Rocky Mountains, this specimen keys to Sweltsa fidelis, but the number of species in that key is fairly small and it might not be accurate.

This stonefly was collected from the Madison River on June 30th, 2019 and added to on July 17th, 2019.

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