Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1409660

Acmon Blue
Plebejus acmon

Observation date: July 28, 2025
Submitted by: Zencoyote
Specimen type: Photograph
Observation notes: Hundreds of individuals, showing a broad range of features. Strong association with the Heliotrope, but spreading to grasses and other meadow vegetation. Last picture is a female that appears to be a Cottlei form with a strong blue sheen. All females seem to be fairly worn out, but the males were in better shape. Weather mild, intermittent breeze.
Status: Resident
Verified by: Ken Davenport
Verified date: July 29, 2025
Coordinator notes: None.
Checklist region(s): United States, California, San Diego County