- BND: Dainty Sulphur; Nathalis iole Boisduval, 1836
- BNA: Dainty Sulphur; Nathalis iole
- NDC: NAIO
- Habitat: Rare late summer stray; roadways, railroad rights of way with bare, often gravelly soil
- Larval food: Asteracea, including Bidens, Dissodia, Helenium, also including cultivated varieties
- Adult flight: Occasional stray in late summer; cannot survive freezing; rarely encountered in ND
- References: Royer 82, Opler & Krizek 79, Scott 210
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