A North American butterfly that is a form of the white admiral, formerly considered a separate species. Its dark blue wings with red-orange bars and spots mimic the unpalatable pipevine swallowtail.
Definition of red-spotted purple in US English:
red-spotted purple
noun
A North American butterfly that is a form of the white admiral, formerly considered a separate species. Its dark blue wings with red-orange bars and spots mimic the unpalatable pipevine swallowtail.