Cloudless Sulphur

The male butterfly is clear yellow above and yellow or mottled with reddish brown below and the female is lemon-yellow to golden or white on both surfaces, with varying amounts of black spotting along the margin and a black open square or star on the bottom forewing. Wingspan: 63–78 mm (2.5–3.1 in). (I think this is a male, based on the description, because the females show a darker margin in the wings. It was just coming out of the chrysalis.)