A person who scientifically reveals a new species by technically describing its characteristics and particularly how it differs from other species.(noun)
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Use "describer" in a sentence
"And a monk who considers a horse excellent, whatever his natural forms, can only see him as the auctoritates have described him, especially if "- and here he smiled slyly in my direction -" the describer is a learned Benedictine. ""
"Secondly, I'm especially not arguing about 9/11 or so-called "Truthers" (gosh, what a limp and vague describer)"
"Her favorite word to describer her work is “experiential.”"