On Aug 16, 2006, Magpye from NW Qtr, AR (Zone 6a) wrote:
Identification: Upperside of male forewing has a broad diagonal band and a yellow spot near the end of the cell. Tails all black, narrow. Female mostly black; hindwing has a blue and gray-green submarginal band on upperside and very short tails.
Life history: Not reported.
Flight: Probably 2 from April- October.
Wing span: 4 5/8 - 4 3/4 inches (11.7 - 12 cm).
Caterpillar hosts: Leaves of citrus trees (Rutaceae family).
Adult food: Nectar of flowers including Lantana.
Habitat: Subtropical forests.
Range: Mexico south to Argentina. Occasional in south Texas; rare stray to southern Arizona and north Texas.