Synonyms and other taxonomic changes
Belongs to subgenus/split genus Heraclides
Identification
Strongly sexually dimorphic. Male has a very broad yellow median band, wider than any other species in its range, and long all-black tails. Females are dark brown with short, stubby tails. Both sexes have a row of large yellow crescent-shaped spots along the hindwing margin; females have a row of blue crescents as well. Female's forewing has a paler tip than base, with line of contrast curving through middle and along leading edge.
Range
Argentina north to Mexico, straying into south Texas, very rarely into Arizona; one specimen taken in north Texas
Habitat
Subtropical; females more prone to wooded habitats, males more to open
Food
Caterpillars eat foliage of citrus trees (family Rutaceae). Adults feed on flower nectar.
Print References
Wauer, Roland H. "Butterflies of the Lower Rio Grande Valley" Boulder CO: Johnson Books, 2004.
