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:

Images of Callophrys mossii

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Callophrys mossii - Moss-Elfin-Steve-Poole.jpg

Callophrys mossii - Moss-Elfin-Steve-Poole.jpg

The map below displays all BAMONA data for this species and has three different data layers:
1. All records (yellow dots)   2. Recently verified records (orange dots)*   3. US county records (purple)

There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.

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Observation Date Submitter Region Verified Datesort icon
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