Colonus puerperus is a species of jumping spider commonly found in the eastern United States. Its range stretches along the Gulf Coast from Florida to Texas, and north to Kansas, Illinois, and Pennsylvania. It is usually found in grassy areas during the warmer months of the year. Adult females are between 7 and 11 mm (0.3–0.4 in) in length. Adult males are between 5 and 7 mm (0.2–0.3 in). The species name is from Latin puerperus, "just having born a child" (from puer, child, and pario, give birth).