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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph Pictures

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  Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
Fairly poor closeup photo of a tarsal claw
Total lack of spines/tubercles on the abdominal segments  Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
Total lack of spines/tubercles on the abdominal segments
This one's meant to show the setae on the edge of the adbominal segments  Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
This one's meant to show the setae on the edge of the adbominal segments
I don't see any sign here of the excresences that would indicate Ephemerella tibialis  Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
I don't see any sign here of the excresences that would indicate Ephemerella tibialis
Maxilla closeup  Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
Maxilla closeup

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