Colias nastes ferrisi Verhulst 2004

Verhulst 2004. [A new subspecies of Colias nastes Boisduval 1832 found in Alaska, north west North America and general information on the distribution of this taxon (Lepidoptera-Pieridae-Coliadinae).] Lambillionea, 104(1)(Tome I), Mars 2004: 127-133