Somewhere in the naming of animals, science and theology have always made uneasy company. The Old Testament hands Adam his first job: go through every creature and give it a name. Taxonomy, in other words, is possibly the oldest human profession. Peter Huemer, a moth researcher at the Tyrolean State Museum in Innsbruck, seems to reckon it’s also one of the most urgent. His newest contribution to that ancient ledger is a small purple moth from the mountains of Crete, and he has named it, with...