Attributes of Speyeria adiaste
Unsilvered Fritillary
Speyeria adiaste (W.H. Edwards, 1864)
Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Upperside of male pale reddish-tan to bright brick red; female larger and paler than male. Dark markings scattered and small except for bold postmedian line. Underside pale yellow to gray. Hindwing spots unsilvered and barely contrasting with background color.
Wing Span: 2 - 2 3/8 inches (5 - 6.1 cm).
Life History: Eggs are laid singly on fallen leaves and twigs near violets. First-stage caterpillars hibernate unfed, feeding on violet leaves in the spring.
Flight: One flight from June-July.
Caterpillar Hosts: Violets including Viola quercetorum.
Adult Food: Flower nectar.
Habitat: Openings in redwood and coniferous forests, oak woodlands, chaparral.
Range: Very local, restricted range in California County north to San Mateo County; east to north Los Angeles County and Kern County.
Conservation: Subspecies atossa is extinct; subspecies adiaste has a limited range and may be in jeopardy; while subspecies clemencei has the most extensive range.
NCGR: G3 - Very rare or local throughout its range or found locally in a restricted range (21 to 100 occurrences). (Threatened throughout its range).
Management Needs: Inventory and monitor subspecies adiaste populations and make conservation assessment.
Taxonomy Notes:
Images of Speyeria adiaste
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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 |
||
|---|---|---|---|---|---|
| June 25, 1930 | legacy.reporter (unknown) | Kern County, California, United States | May 01, 2011 | Details | |
| May 27, 1923 | legacy.reporter (unknown) | Los Angeles County, California, United States | May 01, 2011 | Details | |
| June 10, 1923 | legacy.reporter (John A. Comstock) | Los Angeles County, California, United States | May 01, 2011 | Details | |
| June 28, 2007 | legacy.reporter (Ray Collett) | Santa Cruz County, California, United States | May 01, 2011 | Details | |
| June 28, 2007 | legacy.reporter (Ray Collett) | Santa Cruz County, California, United States | December 31, 2010 | Details | |
| June 25, 2030 | legacy.reporter (unknown) | Kern County, California, United States | December 31, 2010 | Details | |
| May 27, 2023 | legacy.reporter (unknown) | Los Angeles County, California, United States | December 31, 2010 | Details | |
| June 10, 2023 | legacy.reporter (John A. Comstock) | Los Angeles County, California, United States | December 31, 2010 | Details | |
| June 10, 1981 | legacy.reporter (Michael Smith) | Monterey County, California, United States | March 09, 2010 | Details | |
| June 06, 1976 | legacy.reporter (Michael Smith) | Santa Cruz County, California, United States | January 07, 2010 | Details | |
| July 04, 1976 | legacy.reporter (Michael Smith) | Santa Cruz County, California, United States | January 07, 2010 | Details | |
| July 16, 1976 | legacy.reporter (R. Gardner) | Santa Cruz County, California, United States | January 07, 2010 | Details | |
| June 03, 1973 | legacy.reporter (William Swisher) | Monterey County, California, United States | January 06, 2010 | Details | |
| June 16, 1971 | legacy.reporter (William Swisher) | Monterey County, California, United States | January 06, 2010 | Details | |
| June 11, 1969 | legacy.reporter (James R. Mori) | San Luis Obispo County, California, United States | January 06, 2010 | Details | |
| June 15, 1951 | legacy.reporter (Unknown) | San Luis Obispo County, California, United States | January 05, 2010 | Details | |
| June 19, 1997 | legacy.reporter (Jeffrey Glassberg) | Monterey County, California, United States | January 05, 2010 | Details | |
| July 04, 1975 | legacy.reporter (Jim Brock) | San Luis Obispo County, California, United States | January 04, 2010 | Details | |
| June 30, 1922 | legacy.reporter (Victor Clemence) | San Luis Obispo County, California, United States | January 04, 2010 | Details | |
| January 01, 1950 | legacy.reporter (unknown) | Los Angeles County, California, United States | December 17, 2009 | Details | |
| June 24, 1964 | legacy.reporter (unknown) | Monterey County, California, United States | December 17, 2009 | Details | |
| June 23, 1977 | Ken Davenport (Ken Davenport) | Santa Cruz County, California, United States | December 16, 2009 | Details | |
| June 25, 1984 | Ken Davenport (Ken Davenport) | Santa Cruz County, California, United States | December 16, 2009 | Details | |
| June 24, 1977 | Ken Davenport (Ken Davenport) | Monterey County, California, United States | December 16, 2009 | Details | |
| July 16, 1984 | Ken Davenport (Ken Davenport) | Monterey County, California, United States | December 16, 2009 | Details | |
| June 23, 1990 | Ken Davenport (Ken Davenport) | Monterey County, California, United States | December 16, 2009 | Details | |
| June 10, 1922 | legacy.reporter (J. A. Comstock) | Los Angeles County, California, United States | December 16, 2009 | Details | |
| May 28, 1947 | legacy.reporter (C. H. Dickenson) | Monterey County, California, United States | December 16, 2009 | Details | |
| July 23, 1932 | legacy.reporter (L.M. Martin) | Kern County, California, United States | December 16, 2009 | Details | |
| July 07, 1918 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| July 09, 1918 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| July 18, 1918 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| July 01, 1959 | legacy.reporter (Joe Wilson) | Kern County, California, United States | December 16, 2009 | Details | |
| July 17, 1933 | legacy.reporter (L. M. Martin) | Kern County, California, United States | December 16, 2009 | Details | |
| June 10, 1922 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| June 13, 1922 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| June 21, 1923 | legacy.reporter (J. A. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| June 21, 1923 | legacy.reporter (C. Kirkwood & J. Comstock) | Kern County, California, United States | December 16, 2009 | Details | |
| August 12, 1923 | legacy.reporter (J. D. Gunder) | Kern County, California, United States | December 16, 2009 | Details | |
| April 25, 1930 | legacy.reporter (No name on label) | Kern County, California, United States | December 16, 2009 | Details | |
| June 24, 1930 | legacy.reporter (No name on label) | Kern County, California, United States | December 16, 2009 | Details | |
| June 25, 1932 | legacy.reporter (J. A. Corcoran) | Kern County, California, United States | December 16, 2009 | Details | |
| May 30, 1934 | legacy.reporter (Oscar Sette) | Kern County, California, United States | December 16, 2009 | Details | |
| June 01, 1934 | legacy.reporter (Oscar Sette) | Kern County, California, United States | December 16, 2009 | Details | |
| June 29, 1934 | legacy.reporter (Oscar Sette) | Kern County, California, United States | December 16, 2009 | Details | |
| September 03, 1939 | legacy.reporter (R. H. Reid) | Kern County, California, United States | December 16, 2009 | Details | |
| September 06, 1930 | legacy.reporter (No name on label) | Kern County, California, United States | December 16, 2009 | Details | |
| September 03, 1930 | legacy.reporter (No name on label) | Kern County, California, United States | December 16, 2009 | Details | |
| June 25, 1930 | legacy.reporter (Chris Henne) | Kern County, California, United States | December 16, 2009 | Details | |
| September 03, 1930 | legacy.reporter (Chris Henne) | Kern County, California, United States | December 16, 2009 | Details |
