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The Specimen

Ephemera simulans (Brown Drake) Mayfly DunEphemera simulans (Brown Drake) Mayfly Dun View 2 Pictures
Collected July 11, 2009 from Flathead Lake in Montana
Added to Troutnut.com by on June 27, 2011

The Discussion

TaxonJune 24th, 2019, 9:26 pm
Site Editor
Plano, TX

Posts: 1314
Hi Bob-

I believe this mayfly to be a female dun (subimago) rather than a spinner (imago) as it was labeled. Do you have a reason to believe I am mistaken?
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
TroutnutJuly 2nd, 2019, 11:50 pm
Administrator
Bellevue, WA

Posts: 2692
Good catch Roger.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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