Quote Originally Posted by GradStudentLeper View Post
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.
Thank you for explaining. I understand now.