This mayfly was collected from the Yakima River on April 9th, 2021 and added to Troutnut.com on April 12th, 2021.
Fairly poor closeup photo of a tarsal claw
Total lack of spines/tubercles on the abdominal segments
I don't see any sign here of the excresences that would indicate Ephemerella tibialis
This one's meant to show the setae on the edge of the adbominal segments
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