Quote Originally Posted by GarterGeek View Post
Just curious: What is the evolutionary species concept and how is it different from the biological species concept? How does the evolutionary species concept make subspecies invalid? I don't know anything about this.
The Evolutionary Species concept defines a species as a Lineage which is distinct from others, and identifiably on a separate evolutionary path than its closest relatives. IE. it defines species in terms of an evolutionary significant unit. A subspecies by definition is not really distinct or on a separate path from other members of its species, and if it is, it needs to be elevated to species status.