The Cloudless Sulphur cannot survive northern winters, and is considered a stray in Wisconsin. The species does not stray to Wisconsin every year, and it should be considered a rare find.
Weekly sightings for Cloudless Sulphur
Large, with up to three-inch wingspans. Males are yellow with no markings on the upper wings and faint spots underneath. Females are yellow above with black marginal spots. Below, the spots are more noticeable than on the males.
Open areas, including prairies, old fields, roadsides, and gardens.
3-4 broods in the far south, but an unlikely migrant and even less likely breeding species in Wisconsin.
A rare migrant into Wisconsin, this species may reproduce in Wisconsin if it arrives early enough in the year. Its host plants are various legumes including sennas and partridge pea.
Ocracoke Island, Hyde Co., NC. March 26, 2007.
Sand Ridge State Park, Mason Co., IL. August 28, 2010.