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Closeup insects from Hungry Horse Creek

Rhithrogena Mayfly NymphRhithrogena  Mayfly Nymph View 1 PicturesBased on the lack of coloration and the two bars on the last tergite (
One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.
One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.
Tergite: The top (dorsal) part of a single segment on an insect's abdomen when it consists of a single chitinous plate (sclerite), or an individual sclerite if the segment has more than one.
)
this may be Rhithrogena virilis.
Collected May 12, 2005 from Hungry Horse Creek in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Rhithrogena Mayfly NymphRhithrogena  Mayfly Nymph View 1 Pictures
Collected May 12, 2005 from Hungry Horse Creek in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

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