Gulf Fritillary (Agraulis vanillae). A gulf fritillary sips nectar from an ironweed at Brackenridge Field Laboratory in… https://www.rawpixel.com/image/8720142/photo-image-flower-plant-public-domainFree Image from public domain licenseGulf Fritillary (Agraulis Vanillae). Digitally enhanced from our own publication of Moths and Butterflies of the United… https://www.rawpixel.com/image/403490/free-illustration-image-butterfly-vintage-moths-and-butterflies-usaFree Image from public domain licenseGulf Fritillary (Agraulis vanillae) on Blue Passionflower (Passiflora caerulea).Austin, TX USAA public domain image by Anne… https://www.rawpixel.com/image/8724220/photo-image-plant-leaf-public-domainFree Image from public domain licenseGulf Fritillary (Agraulis vanillae) on Blue Passionflower (Passiflora caerulea).Austin, TX USAA public domain image by Anne… https://www.rawpixel.com/image/8724222/photo-image-plant-leaf-public-domainFree Image from public domain licenseGulf Fritillary (Nymphalidae, Agraulis vanillae)USA, TX, Travis Co.: AustinBrackenridge Field Laboratory https://www.rawpixel.com/image/8724093/photo-image-public-domain-animalFree Image from public domain license