Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1409234

'Rustic' Arctic Blue
Plebejus glandon rusticus

Observation date: July 16, 2025
Submitted by: Jon Kindschy
Specimen type: Photograph
Observation notes: None.
Status: Resident
Verified by: mikefisher
Verified date: August 31, 2025
Coordinator notes: This is a male Arctic Blue (subspecies rusticus)...Boisduval's is usually larger and more solidly blue-blue above (rather than gray-blue as you can see this color easily in your photo)...the dark bar you see on the forewings of the Arctic Blue is often absent on Boisduval's or if it is present it is just a mere small black dot...though there could be the odd exception of course...such is nature! Mike
Checklist region(s): United States, Colorado, Gunnison County