found: ITIS, Nov. 8, 2011(Family Pieridae -- orange-tips, Sulphurs, Whites; Superfamily Papilionoidea -- butterflies; Order Lepidoptera -- butterflies, moths; lists three subfamilies: Subfamily Coliadinae -- Sulphurs, Subfamily Dismorphiinae -- Mimic-Whites, Subfamily Pierinae -- Whites)
found: BugGuide.net website, Nov. 8, 2011(Family Pieridae - Whites, Sulphurs, Yellows. Lists two subfamilies: Subfamily Coliadinae - Sulphurs and Yellows; Subfamily Pierinae - Whites)
found: Checklist of North American butterflies occurring north of Mexico, via WWW, Nov. 8, 2011(Whites and Sulphurs, Family Pieridae; Whites, Subfamily Pierinae; Sulphurs, Subfamily Coliadinae; Mimic-Whites, Subfamily Dismorphiinae)
found: Wikipedia, Nov. 8, 2011(The Pieridae are a large family of butterflies with about 76 genera containing approx. 1,100 species, mostly from tropical Africa and Asia. Most pierid butterflies are white, yellow or orange in coloration, often with black spots.)
found: Lambert, A.M. Natural history and population ecology of a rare pierid butterfly, Euchloe ausonides insulanus Guppy and Shepard (Pieridae), 2011.
found: The pierids, via animals.howstuffworks.com website, Nov. 8, 2011(Pierids are the most familiar types of butterflies found in open fields. This group includes the sulfurs, orange-tips, and whites. The pierids are colored orange, yellow, or white and often have dark markings on the wings; Sulfurs--sometimes spelled sulphurs--and whites make up a family of butterflies; Sulfur and white butterflies)
found: Illustrated checklist of Neotropical butterflies (from Mexico to Patagonia), via WWW, Nov. 8, 2011(Family Pieridae -- Whites and Yellows)