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Closeup insects from Flathead Lake

Hexagenia limbata (Hex) Mayfly DunHexagenia limbata (Hex) Mayfly Dun View 2 PicturesThis species is very abundant in Flathead and Whitefish Lakes with a smaller population in lakes of the Swan River Drainage, and a few in Lake McDonald in Glacier Park. This species usually emerges along with Ephemera simulans.
Collected July 31, 2010 from Flathead Lake in Montana
Added to by Bnewell on June 29, 2011
Paraleptophlebia bicornuta (Mahogany Dun) Mayfly NymphParaleptophlebia bicornuta (Mahogany Dun) Mayfly Nymph View 1 PicturesThis species is interesting because it is common in lakes as well as streams. It is one of the last species of the year to emerge in western Montana. Adults have been collected as late as October 15 weather permitting.
Collected July 31, 2007 from Flathead Lake in Montana
Added to by Bnewell on June 26, 2011

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