Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1425225

Chalcedon Checkerspot
Euphydryas chalcedona

Observation date: June 16, 2026
Submitted by: RoxannaTessman
Specimen type: Photograph
Observation notes: Briefly foraging on Butterfly Bush. One photo with open wings and one closed.
Status: Resident
Verified by: Ken Davenport
Verified date: June 17, 2026
Coordinator notes: This may also be Euphydryas colon, but most authorities say they are chalcedona in Jackson County. I have only one individual from near Mt. Ashland which I think is colon. Andy Warren's Oregon book was not definitive in splitting Oregon's 3 different Variable Checkerspot species into chalcedona, colon and anicia which I accept.-Ken Davenport
Checklist region(s): United States, Oregon, Jackson County