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Mayfly Species Ecdyonurus criddlei (Little Slate-Winged Dun)

Pictures Below

Where & When

Region: West

Time Of Year (?): June to July

This is one of the most widely distributed of the former Heptagenia species in the West, including the rivers along the Pacific Northwest coast.

Hatching Behavior

Water Temperature: 54F for good hatches

Pictures of 1 Mayfly Specimen in the Species Ecdyonurus criddlei:

Ecdyonurus criddlei (Little Slate-Winged Dun) Mayfly NymphEcdyonurus criddlei (Little Slate-Winged Dun) Mayfly Nymph View 1 PicturesThis is an interesting Heptageniid mayfly since in western Montana it is only found in cold lakes, especially those in Glacier National Park.
Collected July 31, 2007 from Kintla Lake in Montana
Added to by Bnewell on June 26, 2011

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