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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Speyeria zerene - Speyeria-zerene-ventral-2-Queener-crop.jpg

Speyeria zerene - Speyeria-zerene-ventral-2-Queener-crop.jpg

Speyeria zerene - 1712_58.jpg

Speyeria zerene - 1712_58.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
July 16, 2014 Sue Orlowski Spokane County, Washington, United States August 10, 2014 Details
July 04, 2014 Sue Orlowski Whitman County, Washington, United States August 05, 2014 Details
July 07, 2014 Sue Orlowski Spokane County, Washington, United States August 05, 2014 Details
August 27, 2013 plex1ppus Klamath County, Oregon, United States October 10, 2013 Details
September 03, 2013 plex1ppus Curry County, Oregon, United States October 10, 2013 Details
September 01, 2013 randimal Thurston County, Washington, United States September 05, 2013 Details
September 20, 2009 Joe Sebastiani Tulare County, California, United States August 27, 2013 Details
July 03, 2011 randimal Okanogan County, Washington, United States August 02, 2013 Details
July 05, 2013 PDunwiddie Skamania County, Washington, United States July 12, 2013 Details
June 01, 2013 PDunwiddie Kittitas County, Washington, United States June 23, 2013 Details
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
May 25, 2007 swittwa Yakima County, Washington, United States October 21, 2012 Details
August 07, 2012 Wendelin Ravalli County, Montana, United States September 17, 2012 Details
September 04, 2012 Greg Dean British Columbia, Canada September 05, 2012 Details
July 21, 2010 hjbarkey9 Routt County, Colorado, United States July 21, 2012 Details
July 13, 2012 wvbirder Elko County, Nevada, United States July 21, 2012 Details
July 29, 2011 Blue Fox British Columbia, Canada April 27, 2012 Details
August 22, 2011 Jeanne Dammarell Pend Oreille County, Washington, United States January 30, 2012 Details
August 24, 2011 Jeanne Dammarell 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
August 29, 2010 plex1ppus Spokane County, Washington, United States December 05, 2011 Details
July 01, 2011 Jeanne Dammarell 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
August 20, 2009 plex1ppus (plex1ppus) Spokane County, Washington, United States April 06, 2011 Details
August 29, 2010 plex1ppus (plex1ppus) Spokane County, Washington, United States February 14, 2011 Details
August 06, 2008 Peggy Hamlen Fremont County, Idaho, United States February 10, 2011 Details