Back to Index Great Spangled Fritillary Speyeria cybele    Copyright David Seibel, 2010 (#3920) | Send Comment Camera: Canon EOS 7D Exposure: 1/400 sec, f/10, ISO 800 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: May 30, 2010 Location: SE of Arkansas City, Kansas, USA Description: Two of these spectacular butterflies nectaring on butterfly milkweed (Asclepias tuberosa), a favorite nectar source for many species of butterflies and other insects.