Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1424833

Rocky Mountain Dotted-Blue
Euphilotes ancilla

Observation date: June 11, 2026
Submitted by: Cascade Colors
Specimen type: Photograph
Observation notes: Seems like a pretty worn one in first pic; 2nd pic is mating pair with one who is trying to break it up, ha (though why such a size difference?)
Status: Resident
Verified by: mikefisher
Verified date: June 14, 2026
Coordinator notes: Correct ID...worn to fresh (female)...difference in size...she is a big girl! Mike
Checklist region(s): United States, Colorado, Grand County