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Updates from April 4, 2007

Closeup insects by Bnewell from the Big Thompson River in Montana

Rhithrogena virilis Mayfly NymphRhithrogena virilis  Mayfly Nymph View 2 PicturesBefore I reared this specimen the nymphs were unknown. See Western North American Naturalist for the paper on the description of this species' nymph.
Collected April 4, 2007 from the Big Thompson River in Montana
Added to by Bnewell on June 26, 2011

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