Photo 16888934, (c) Dan Rademacher, some rights reserved (CC BY), uploaded by Dan Rademacher

Attribution © Dan Rademacher some rights reserved Uploaded by rademacherdan Source iNaturalist Associated observations Photos / Sounds What Variable Checkerspot (Euphydryas chalcedona) Observer rademacherdan Date April 29, 2018 11:49 AM PDT Place San Bruno Mountain State & County Park, Brisbane, CA, US (Google, OSM) Date Added April 29, 2018 03:56 PM PDT 2 IDs Research Grade View Sizes small medium large original