Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 713771

Chalcedon Checkerspot
Euphydryas chalcedona

Observation date: May 21, 2012
Submitted by: evilrobot42
Specimen type: Photograph
Observation notes: These are very common butterflies at the Picchetti Ranch Open Space Preserve. There were a lot of them flitting about the day I took this picture. They are very active, but this one sat still for me and let me get close. I've seen these butterflies here last spring as well.
Status: Resident
Verified by: Ken Davenport
Verified date: May 27, 2012
Coordinator notes: The basic black coloration is diagnostic of Coastal nominate Chalcedon Checkerspot. Edith's Checkerspots tend to ne much more orange and with more rounded less elongated wing shapes.