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Baetisca laurentina (Armored Mayfly) Mayfly Nymph Pictures

This mayfly was collected from the Namekagon River on January 13th, 2004 and added to Troutnut.com on January 25th, 2006.

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Baetisca laurentina (Armored Mayfly) Mayfly Nymph from the Namekagon River in Wisconsin
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This picture shows very well the dark outline on the ventral margin of the mesonotal shield which is a key feature of B. laurentina.  Baetisca laurentina (Armored Mayfly) Mayfly Nymph from the Namekagon River in Wisconsin
This picture shows very well the dark outline on the ventral (Ventral: Toward or on the bottom.) margin of the mesonotal shield which is a key feature of B. laurentina.
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Baetisca laurentina (Armored Mayfly) Mayfly Nymph from the Namekagon River in Wisconsin

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