Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1423514

Dainty Sulphur
Nathalis iole

Observation date: May 24, 2026
Submitted by: Jon Kindschy
Specimen type: Photograph
Observation notes: About the size of a dime. Noticeably smaller than more often seen Queen Alexandra's.
Status: Migrant
Verified by: mikefisher
Verified date: June 19, 2026
Coordinator notes: Your ID is correct...the Dainty Sulphur is the smallest sulphur-Pierid butterfly in the world. It's a wonder that it can migrate hundreds of miles every year! Mike
Checklist region(s): United States, Colorado, Gunnison County