Attributes of Speyeria zerene
Zerene Fritillary
Speyeria zerene (Boisduval, 1852)
Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Upper surface of both wings tawny to red-brown with dark markings. Underside of hindwing has silvered or unsilvered marginal spots more triangular than those of Speyeria coronis.
Wing Span: 2 1/8 - 2 3/4 inches (5.4 - 7 cm).
Life History: Males patrol all day seeking females. Females may delay egg-laying until late summer. Eggs are laid on leaf litter near violets; unfed first-stage caterpillars overwinter on a silken mat. In the spring, caterpillars feed on leaves of violets.
Flight: One brood from mid-June to early September.
Caterpillar Hosts: Violets including Viola adunca, V. lobata, V. cuneata, V. nuttallii, and V. purpurea.
Adult Food:
Habitat: accelerated by increased recreational use and development of the coast. Speyeria zerene hippolyta is listed as T1 by The Nature Conservancy: 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). The Myrtle's silverspot (subspecies myrtleae) and Behren's silverspot (subspecies behrensii) are listed by the United States Fish and Wildlife Service.
Range: Coastal British Columbia south and east to Montana, south to central California, Arizona, and New Mexico.
Conservation: The Oregon silverspot (subspecies hippolyta) is historically known from 17 locations along the Pacific Coast from southern Washington to central Oregon, but is now found in only 4 sites in Oregon.
NCGR:
Management Needs: Establish Critical Habitat areas where encroaching development and plants can be managed to preserve meadows where the caterpillar host plant (Viola adunca) grows.
Taxonomy Notes:
Images of Speyeria zerene
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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.
Instructions: Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
To change which map layers are displayed, click on the plus sign [+] on the right side of the map.
The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
| July 26, 1988 | legacy.reporter (George T. Austin) | Lincoln County, Nevada, United States | December 01, 2012 | Details | |
| July 14, 1989 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| July 14, 1989 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| July 15, 1989 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| July 16, 1989 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| July 18, 1989 | legacy.reporter (George T. Austin) | White Pine County, Nevada, United States | December 01, 2012 | Details | |
| July 17, 1998 | legacy.reporter (W. D. Patterson) | Lyon County, Nevada, United States | December 01, 2012 | Details | |
| July 18, 1998 | legacy.reporter (W. D. Patterson) | Lyon County, Nevada, United States | December 01, 2012 | Details | |
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May 25, 2007 | swittwa | Yakima County, Washington, United States | October 21, 2012 | Details |
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August 07, 2012 | Wendelin | Ravalli County, Montana, United States | September 17, 2012 | Details |
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September 04, 2012 | Greg Dean | British Columbia, Canada | September 05, 2012 | Details |
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July 21, 2010 | hjbarkey9 | Routt County, Colorado, United States | July 21, 2012 | Details |
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July 13, 2012 | wvbirder | Elko County, Nevada, United States | July 21, 2012 | Details |
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July 29, 2011 | Blue Fox | British Columbia, Canada | April 27, 2012 | Details |
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August 22, 2011 | Jdammarell | Pend Oreille County, Washington, United States | January 30, 2012 | Details |
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August 24, 2011 | Jdammarell | Lincoln County, Washington, United States | January 30, 2012 | Details |
| July 17, 1996 | legacy.reporter (John B. Vernon) | Elko County, Nevada, United States | January 01, 2012 | Details | |
| July 17, 1996 | legacy.reporter (John B. Vernon) | Elko County, Nevada, United States | January 01, 2012 | Details | |
| July 23, 1996 | legacy.reporter (John B. Vernon) | Elko County, Nevada, United States | January 01, 2012 | Details | |
| June 26, 2012 | Ken Davenport (Ken Davenport) | Mono County, California, United States | January 01, 2012 | Details | |
| August 02, 2011 | legacy.reporter (Ken Kertell) | White Pine County, Nevada, United States | January 01, 2012 | Details | |
| August 03, 2011 | legacy.reporter (Ken Kertell) | White Pine County, Nevada, United States | January 01, 2012 | Details | |
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August 29, 2010 | plex1ppus | Spokane County, Washington, United States | December 05, 2011 | Details |
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July 01, 2011 | Jdammarell | Lincoln County, Washington, United States | July 28, 2011 | Details |
| August 10, 1976 | legacy.reporter (Jim Brock) | Del Norte County, California, United States | May 01, 2011 | Details | |
| July 20, 1975 | legacy.reporter (Jim Brock) | Tulare County, California, United States | May 01, 2011 | Details | |
| August 01, 1972 | legacy.reporter (Jim Brock) | Mono County, California, United States | May 01, 2011 | Details | |
| June 23, 1976 | legacy.reporter (Jim Brock) | Lassen County, California, United States | May 01, 2011 | Details | |
| August 05, 1972 | legacy.reporter (Jim Brock) | Modoc County, California, United States | May 01, 2011 | Details | |
| June 30, 1979 | legacy.reporter (unknown) | Del Norte County, California, United States | May 01, 2011 | Details | |
| December 03, 1980 | legacy.reporter (unknown) | Del Norte County, California, United States | May 01, 2011 | Details | |
| June 03, 1933 | legacy.reporter (R. Sternitzky) | Mendocino County, California, United States | May 01, 2011 | Details | |
| July 27, 1979 | legacy.reporter (unknown) | Humboldt County, California, United States | May 01, 2011 | Details | |
| July 04, 1983 | legacy.reporter (unknown) | Tuolumne County, California, United States | May 01, 2011 | Details | |
| July 11, 1964 | legacy.reporter (unknown) | Tuolumne County, California, United States | May 01, 2011 | Details | |
| August 10, 1963 | legacy.reporter (unknown) | Mono County, California, United States | May 01, 2011 | Details | |
| August 08, 2011 | Ken Davenport (Ken Davenport) | Tulare County, California, United States | May 01, 2011 | Details | |
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August 20, 2009 | plex1ppus (plex1ppus) | Spokane County, Washington, United States | April 06, 2011 | Details |
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August 29, 2010 | plex1ppus (plex1ppus) | Spokane County, Washington, United States | February 14, 2011 | Details |
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August 06, 2008 | Peggy Hamlen | Fremont County, Idaho, United States | February 10, 2011 | Details |
| June 25, 1934 | legacy.reporter (unknown) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| July 30, 1946 | legacy.reporter (unknown) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| August 09, 1967 | legacy.reporter (Peter Herlan) | Humboldt County, Nevada, United States | January 01, 2011 | Details | |
| June 23, 2010 | legacy.reporter (Paul Opler and EviBuckner-Opler ) | Humboldt County, Nevada, United States | December 31, 2010 | Details | |
| July 14, 2010 | legacy.reporter (Paul Opler and EviBuckner-Opler ) | Okanogan County, Washington, United States | December 31, 2010 | Details | |
| June 30, 1979 | legacy.reporter (unknown) | Del Norte County, California, United States | December 31, 2010 | Details | |
| August 10, 1976 | legacy.reporter (Jim Brock) | Del Norte County, California, United States | December 31, 2010 | Details | |
| December 03, 1980 | legacy.reporter (unknown) | Del Norte County, California, United States | December 31, 2010 | Details | |
| June 03, 2033 | legacy.reporter (R. Sternitzky) | Mendocino County, California, United States | December 31, 2010 | Details | |
| July 27, 1979 | legacy.reporter (unknown) | Humboldt County, California, United States | December 31, 2010 | Details |
