Scientific Name
Agraulis vanillae
Average Life Span
Warm weather: 4 - 6 weeks
Cold weather: 2 - 3 months
Wingspan
2 1/2 - 3 3/4 inches (6.3 - 9.5 cm)
The Gulf fritillary, scientifically known as Agraulis vanillae, adds vibrancy to the southern United States’ landscape. This medium-sized butterfly thrives in a variety of sunlight situations, from roadsides to open forests, and is commonly found in fields, pastures, yards, and parks.
The Gulf fritillary has elongated forewings and females are typically larger than males. Sexual dimorphism is evident in the spectacular display of bright orange wings covered with distinctive black markings, with females appearing slightly darker and more intricately patterned. Notably, the forewing cell has three prominent black-rimmed white dots, which adds to its appeal. A rich brown color on the underside of the wings contrasts with elongated silvery-white dots, adding to their beauty.
Gulf fritillaries migrate annually, with unique seasonal movements. During the spring, adults migrate northward, forming transient breeding colonies throughout the southeast. While some individuals may journey into the central United States, sightings in the Midwest are uncommon. As late summer turns to October, a spectacular event occurs as large numbers of adults travel southward, converging on peninsular Florida. They seek sanctuary in frost-free areas to overwinter, ensuring the survival of their species.
Classification
Family: Nymphalidae
Subfamily: Heliconinae
Tribe: Heliconini
Genus: Dione
Species: D. vanillae (Synonyms: Papilio vanillae,
Agraulis vanillae)
RANGE
Gulf fritillary’s range is in South America north through Central America, Mexico, and the West Indies to the southern United States. It wanders north to the central United States and is rare northward. They can be found throughout the year in South Florida and South Texas and January-November in the north.
Host Plants
Gulf fritillary relies on Passiflora species as a host plant, particularly various varieties of passion-vine such as maypops (Passiflora incarnate), running pop (P. foetida), yellow passion flower (Passiflora lutea), and corky-stemmed passion flower (Passiflora suberosa).
NECTAR PLANTS
Gulf fritillary butterflies feed on nectar from lantana, shepherd’s needle, cordias, zinnia, aster, thistle, verbina, and others.
Eggs
Gulf fritillary eggs start off yellow then turn a dark orange. They are elongate and laid singly on new growth on the host plant leaves.
Caterpillar
Gulf fritillary caterpillars are orange with darker stripes and numerous black branched spines.
Chrysalis
The Gulf fritillary chrysalis is light brown with darker brown blotches.