Vladimir Nabokov is not only a great literary figure. He was a world-class lepidopterist who named ten new species. Robert Michael Pyle is a butterfly expert who (with Brian Boyd) has just released “Nabokov’s Butterflies: Unpublished and Uncollected Writings.” Pyle tells Judith Strasser about Nabokov’s work with butterflies, and actor Jeff Golden performs excerpts from Nabokov’s butterfly works.