This gorgeous mayfly was photographed by an acquaintance on April 29, 2012, near the Touchet River in SE Washington. Let's see if you identify it, either by common name, or by family, or by genus, or by lifestage (dun or spinner), or by sex (male or female). Guesses are okay. Each will receive a prompt and respectful response. If this mayfly proves difficult to identify, additional clues will be provided.