Cloudless Sulphur
The Cloudless Sulphur is one of the most common and attractive butterflies and is particularly prominent during its southward migration in the fall. Adults are usually bright yellow, but some summer form females are pale yellow or white. Females have a narrow black border on the wings and a dark spot in the middle of the front wing. Males are seasonally dimorphic with winter forms being larger and with darker markings ventrally.