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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.

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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
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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
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Maxilla closeup Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
Maxilla closeup
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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph from the Yakima River in Washington
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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
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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
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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

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