Phoebis sennae

Phoebis sennae, the cloudless sulphur, is a mid-sized butterfly in the family Pieridae found in the Americas. There are several similar species such as the clouded sulphur, the yellow angled-sulphur, which has angled wings, the statira sulphur, and other sulphurs, which are much smaller. The species name comes from the genus Senna to which many of the larval host plants belong.