Scientists finally acknowledged the contribution of famous writer Vladimir Nabokov to entomology.
      
      Author of “Lolita” was keen on butterflies since childhood. Fame didn’t distract him from these insects – money from one of his novels was spent on an expedition to Pyrenees. After moving to America, Nabokov headed butterfly department of a museum of comparative zoology of Harvard University.
      
      His favourite objects were butterflies Polyommatus blues. The writer suggested a new classification system for this genus, based upon structure of genitalia. Nabokov’s hypothesis was that these butterflies arrived to North America, and then to Andes, from Asia via Bering Strait during several waves of migration. No one believed the writer at that time.
      
      However, recent DNA studies have confirmed Nabokov’s hypothesis. Ten million years ago, when Earth’s climate was warmer, these butterflies left Asia for the New World, flying through Bering Strait in five migration waves.