Summary ²

The Variable Checkerspot or Chalcedon Checkerspot (Euphydryas chalcedona) is a species of butterfly, common in western North America from Alaska to Baja California and from the Rocky Mountains to the Pacific Ocean. A highly variable species, the wing upper surface is black to dark brown. The forewing is narrow and pointed compared to similar species. The wingspan is 32 millimetres (1.3 in) – 57 millimetres (2.2 in).

Sources and Credits

1. (c) Patrick Dockens, some rights reserved (CC BY-NC-ND), http://www.flickr.com/photos/15174578@N00/2453431082
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Euphydryas_chalcedona

More Info

• iNat taxon page
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• BugGuide
• Butterflies and Moths of North America
• CalPhotos
• CUIC Insect Images
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• Moth Photographers Group
• NatureServe Explorer 2.0
• Pacific Northwest Moths

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