Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1412128

Mournful Duskywing
Erynnis tristis

Observation date: July 28, 2025
Submitted by: hasfitz5
Specimen type: Photograph
Observation notes: None.
Status: Resident
Verified by: Ken Davenport
Verified date: August 20, 2025
Coordinator notes: None.
Checklist region(s): United States, California, Contra Costa County

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