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Mayfly Species Cinygmula mimus

Pictures Below
  

Where & When


Region: West

In Mayflies: An Angler's Study of Trout Water Ephemeroptera , Knopp and Cormier report "occasional" fishable hatches of this species from southern Alberta, and its known range extends down the east slope of the Rockies into the United States.

Hatching Behavior


Time Of Day (?): Late July through early September


Nymph Biology


Environmental Tolerance: Prefers cool water

Pictures of 3 Mayfly Specimens in the Species Cinygmula mimus:

Male Cinygmula mimus Mayfly SpinnerMale Cinygmula mimus  Mayfly Spinner View 2 PicturesMale Cinygmula mimus spinner trapped in its subimago (Subimago: Mayfly nymphs emerge from the water into subimagoes, better known to anglers as "duns." They are a sexually immature, winged, recognizably adult stage and they must molt one more time into imagoes or "spinners" before they can mate.) skin, a cripple (Cripple: In fly fishing, a cripple is any insect which has been injured or deformed so that it cannot escape the water. This may include stillborn emergers or fully emerged adults which have been damaged, often by wind or waves, so that they can no longer fly. Trout often favor eating crippled insects.)??
Collected June 3, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 5, 2012
Male Cinygmula mimus Mayfly AdultMale Cinygmula mimus  Mayfly Adult View 1 Pictures
Collected May 20, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on May 25, 2012
Female Cinygmula mimus Mayfly SpinnerFemale Cinygmula mimus  Mayfly Spinner View 1 Pictures
Collected May 20, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on May 25, 2012

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