Attributes of Callophrys mossii
Moss' Elfin
Callophrys mossii (Hy. Edwards, 1881)
Family: Lycaenidae
Subfamily: Theclinae
Identification: Upperside of male grayish brown with a tan patch on hindwing inner margin; female light brown to tan with dark borders. Underside coppery brown to purplish brown; inner half of hindwing darker than light outer half.
Wing Span: 7/8 - 1 1/8 inches (2.2 - 2.8 cm).
Life History: In California, males perch on shrubs or at tops of cliffs to watch for females; in Colorado they perch in gulches. Eggs are laid singly on the underside of host plant leaves. Young caterpillars feed on leaves; older ones on flowers and fruits. Chrysalids hibernate.
Flight: One flight from March-June.
Caterpillar Hosts: Stonecrop (Sedum, Sedella, Dudleya, and Parvisedum) species in the Crassulaceae family.
Adult Food: Not reported.
Habitat: Rocky outcrops, woody canyons, cliffs.
Range: Patchy, isolated populations from British Columbia south to southern California, east to Wyoming and Colorado.
Conservation: The San Bruno Elfin (Callophrys mossii bayensis) is listed as Endangered by the U. S. Fish & Wildlife Service. This subspecies is limited to the San Bruno Mountains in San Mateo County, California and a few nearby sites. The San Bruno Elfin has The Nature Conservancy Rank of T1 - Critically imperiled because of extreme rarity (5 or fewer occurrences, or very few remaining individuals), or because of some factor of its biology making it especially vulnerable to extinction. (Critically endangered throughout its range).
NCGR:
Management Needs: Protect habitat of the San Bruno Elfin and other limited populations from development and encroachment by non-native plants.
Taxonomy Notes:
The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
||
|---|---|---|---|---|---|
| January 01, 1950 | legacy.reporter | Alpine County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Amador County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Butte County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Calaveras County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Colusa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Contra Costa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Del Norte County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | El Dorado County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Fresno County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Glenn County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Humboldt County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lake County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Los Angeles County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Madera County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Marin County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mariposa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mendocino County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Monterey County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Napa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Nevada County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Placer County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Plumas County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Bernardino County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Francisco County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Luis Obispo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Mateo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Santa Cruz County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Shasta County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Sierra County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Siskiyou County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Solano County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Sonoma County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Tehama County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Trinity County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Tulare County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Yolo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Larimer County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Boulder County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Jefferson County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Gilpin County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Clear Creek County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Douglas County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | El Paso County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Pueblo County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Fremont County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Arapahoe County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Elbert County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Kootenai County, Idaho, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Latah County, Idaho, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Idaho County, Idaho, United States | December 31, 2004 | Details |


