This nymph was one of many I collected with vivid white or semi-transparent markings on the front of the head, the sides of the pronotum (Pronotum: The top of the insect prothorax.), and the last abdominal segments.
This mayfly was collected from the Gulkana River on July 17th, 2011 and added to Troutnut.com on July 20th, 2011.
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