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Mayfly Species Rhithrogena robusta

Pictures Below
  

Where & When


Region: West

Time Of Year (?): Late May

Fred Arbona calls this species "fairly common throughout the West," but I have found no other information about it.

Pictures of 2 Mayfly Specimens in the Species Rhithrogena robusta:

Rhithrogena robusta Mayfly SpinnerRhithrogena robusta  Mayfly Spinner View 2 Pictures
Collected July 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 15, 2011
Male Rhithrogena robusta Mayfly SpinnerMale Rhithrogena robusta  Mayfly Spinner View 3 PicturesThese specimens were collected from a mating swarm from the east branch of the North Fork of the Touchet River, upstream from the Bluewood Ski Area turn.It was a sunny warm day, mating swarm as 4-8 ft. above this small stream. Four male spinners were collected.Stream photos were taken.
Collected July 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 15, 2011

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