Butterflies from Russia – Multiple Species About this Drawer Russian specimens of Pyrgus centaurae, Agriades optilete, Euphydryas iduna and Boloria eunomia collected in 1983 in the Markovo Depression “Swale” in Chukotka Data Download: UAM100429645.csv. For more information about the data in this file, please read about the data. Collection Locations Find Similar