Family: Nymphalidae, Brush-footed Butterflies view all from this family
Dimensions 1 7/8-2 3/8" (48-60 mm).
Endangered Status The Callippe Silverspot, a subspecies of the Callippe Fritillary, is on the U.S. Endangered Species List. It is classified as endangered in California. This butterfly of the San Francisco Bay Area was once known from 14 different locations; it is now known to exist in only two places. Its grassland habitats, containing the Johnny Jump-up plants on which its caterpillars feed, have been destroyed and degraded thoughout the region by urbanization. Recreational use of its habitat has also been a major factor, as both the plants and the caterpillars and pupae have been crushed by hikers, horses, and off-road vehicles. Collectors, desiring rare butterflies for their collections, have also contributed to the Callippe Silverspot's decline. The habitat of one population, on San Bruno Mountain in San Mateo County, is on protected land and is safe from development. The other population is in a city park and is much more vulnerable to human interference.
Habitat Forests & woodlands, Canyons & caves, Meadows & fields.
Range Northwest, Southwest, Plains, Western Canada, Rocky Mountains, California.