Pyrisitia nise, the mimosa yellow, is a butterfly in the family Pieridae. It is found from Argentina north to the TexasThe habitat consists of brushy woodland edges. The wingspan is 29–51 mm (1.1–2.0 in). Both sexes are yellow. The upperside of the forewing has narrow black outer edges. Black margins of the hindwing are uncommon in males, but always absent in females. Adults are on wing all year round in the tropics. Adults feed on flower nectar. The larvae feed on Mimosa pudica.

From Wikipedia article at https://en.wikipedia.org/wiki/Pyrisitia_nise which is released under the Creative Commons Attribution-Share-Alike License 3.0.