Gulf fritillary
Agraulis vanillae
The Gulf fritillary is a bright orange brush-footed butterfly of the southern United States. Its caterpillars are obligate specialists on passionflowers (Passiflora), feeding on the leaves and other plant parts; the silver-spotted adults nectar at a range of flowers. Gardeners who want to host its larvae must grow a Passiflora species, as no other plant family supports its caterpillars.