Nathalis iole taking nectar on Eriogonum fasciculatum along Cactus Spring Trail. June 17, 2016.

The darker winter form of the Dainty Sulphur - Nathalis iole - at Plum Canyon, Arza-Borrego Desert State Park, Jan. 30, 2006.

Summer form Dainty Sulphur on rattlesnake weed at Cactus Spring Trail, Riverside Co., May 14, 2006.

Nathalis iole was common along Cactus Springs trail on September 20, 2013.