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Closeup insects from Crazy Beaver Spring

Siphlonurus occidentalis (Gray Drake) Mayfly NymphSiphlonurus occidentalis (Gray Drake) Mayfly Nymph View 2 PicturesThis species emerges very late in the fall often along with Siphlonurus autumnalis just before ice forms on edges of streams.
Collected November 30, 2006 from Crazy Beaver Spring in Montana
Added to by Bnewell on June 28, 2011

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