Large butterfly, marked as shown on the underside. Spotted sipping water at mud at the edge of a creek (intermittent flow, but flowing all summer this year) in a mixed conifer forest with Gambel's Oak, chokecherry, and other shrubs in understory. Map location is approximate.
Nectaring on thistle blossoms along Shirley Blvd.
The only one of these I've ever seen.
Great Spangled Fritillary
Sweet Briar Lake
Judson, North Dakota
Speyeria, commonly known as greater fritillaries, is the genus of butterflies in the family Nymphalidae commonly found in North America and Asia. Delimitation versus Argynnis is problematic, and the present genus is sometimes included therein.