Wiktionary
marsh fritillary
n. A medium size, orange, brown and cream chequered butterfly, (taxlink Euphydryas aurinia species noshow=1), of the family Nymphalidae.
Wikipedia
Marsh fritillary
The marsh fritillary (Euphydryas aurinia) is a butterfly of the Nymphalidae family. It is widespread in the Palaearctic region from Ireland in the West to Yakutia in the East, and to North-west China and Mongolia in the South.