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Baetisca columbiana (Armored Mayfly) Mayfly Nymph Pictures

 This is also a very rare mayfly. This specimen was the first ever collected in western Montana. Only 5 specimens have been collected from this large river.

This mayfly was collected from the Flathead River-lower on July 5th, 2007 and added to on June 26th, 2011.

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Baetisca columbiana (Armored Mayfly) Mayfly Nymph from the Flathead River-lower in Montana

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