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Phoebis agarithe
The large orange sulphur, is a butterfly in the family Pieridae. The wingspan is 57–86 mm (2.2–3.4 in). This is the pink-white female form. The other female form is yellow-orange. The upper surface of the males is bright orange without markings.
Spotted feeding on flowers at the National Butterfly Center in Mission, Texas.
Adults feed on flower nectar, favoring lantana, shepherd's needle, bougainvillea, rose periwinkle, Turk's cap and hibiscus.[
Here is one that looks a little similar.
https://davesgarden.com/guides/bf/showim...