Evolutionary-reversion
Guides
Limenitis arthemis arthemis
American White Admiral, White Admiral
Limenitis arthemis arthemis, the American White Admiral, is a forest-dwelling butterfly distinguished by its white-banded wing pattern. This subspecies represents the non-mimetic phenotype within the L. arthemis complex, contrasting with the mimetic red-spotted purple form (L. a. astyanax). Population genetic studies indicate this white-banded phenotype evolved as a derived condition through evolutionary reversion rather than representing the ancestral state. The subspecies occurs in forested and wooded suburban habitats across northern North America, where adults are active during summer months.