Viceroy Butterfly

Upperside is orange and black, resembling the Monarch (Danaus plexippus), except the Viceroy has a black line across the hindwing and a single row of white dots in the black marginal band. Where Monarchs are rare in Florida, Georgia, and the Southwest, Viceroys are brown instead of orange and mimic the Queen (Danaus gilippus).

http://www.butterfliesandmoths.org/species/Limenitis-archippus