Great Southern White is a large white butterfly common in the extreme southern US. It sometimes strays north and is accidental in North Carolina.

Note the distinctive pale blue color of the antennal club tips, which help distinguish it from similar species.

Homestead, Miami-Dade Co., FL 6/22/2010.

Bahia Honda State Park, Monroe Co., FL 6/25/2010.

Big Pine Key, Monroe Co., FL 6/27/2010.

Mission, Hidalgo Co., TX 10/13/04.

Loma Alta, Cameron Co., TX 10/14/04.