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Boisduval's Fritillary
Butterfly.--Somewhat closely resembling B. chariclea, but with the markings much heavier on the outer margin, and the base of the wings generally more deeply obscured with dark brown. The wings on the under side in color and marking closely approximate those of B. chariclea, and I have been unable to distinguish the specimens marked as boisduvali, and contained in the Edwards collection, from the specimens designated as B. chariclea in the same collection, so far as the color and maculation of the under sides of these specimens are concerned. Expanse, male, 1.50 inch; female, 1.75 inch.
Early Stages.--Unknown.
This species, originally described from Labrador, is found throughout boreal America and British Columbia.