Cloudless Sulphur (Phoebis sennae: Pieridae) Wingspan 6.3-7.8 cm (2.5-3.1 in). Closed wing (ventral view). Heritage Park, Belton, Bell County, Texas, USA. Partly in the Blackland Prairie and partly in the Cross Timbers vegetational area. Riparian along the Leon River dominated by Pecan, Hackberry, Cedar Elm, and Box Elder at ca. 160 m (525 ft) elevation.