Danaus eresimus, the Soldier, can be found in AZ,NM,TX,UT,WY, and FL.
Favorite nectar plants include: Acacia, Ageratum, Asclepias, Bidens, Lantana, and Pentas
USDA Growing Zones for these plants include: 2,3,4,5,6,7,8,9,10,11

Host plants:
Asclepias curassavica
Calotropis procera
Cynanchum racemosum unifarium
Cynanchum undulatum
Sarcostemma clausum
Spigelia anthelmia

CC0 image courtesy of
InsectsUnlocked

CC 2.0 image courtesy of
Underethesamemoon