Archonias

Archonias is a monotypic genus of butterflies in the family Pieridae. Archonias brassolis, the cattleheart white, is its sole species. It is found from Central America, south through most of South America.
The wingspan is 56–65 mm for "A. b. rubrosparsa" and 31–34 mm for "A. b. approximata".
Although "Archonias brassolis" is a member of the whites family, it is primarily black, with red hindwing patches and white forewing patches. It is geographically variable, with some forms being remarkable mimics of various "Parides" swallowtails, while others strongly resemble "Heliconius". It is likely that these butterflies are themselves unpalatable and thus Müllerian mimics.
The larvae feed on "Loranthaceae" species and are gregarious. Adults of "A. b. approximata" have been recorded feeding on the nectar of "Eupatorium" species.
Subspecies.
There is also one undescribed subspecies from Colombia.