Attributes of Euchloe ausonides

Large Marble
Euchloe ausonides (Lucas, 1852)

Family: Pieridae
Subfamily: Pierinae
Identification: Scattered white scales in forewing black bar. Black pattern on tip of upperside of forewing. Dense green marbling on underside of hindwing.
Wing Span: 1 1/2 - 2 inches (3.8 - 5.1 cm).
Life History: Males patrol valleys and hillsides for females. Eggs are laid singly on unopened flower buds; caterpillars eat flowers and fruits. Chrysalids hibernate.
Flight: One in the north, May-July; two in central California, February-April and May-August.
Caterpillar Hosts: Plants of the mustard (Brassicaceae) family including rockcress (Arabis drummondi), dyer's woad (Isatis tinctoria), mustards (Brassica species), and hedge mustard (Sisymbrium species).
Adult Food: Nectar from flowers of the mustard family and other plants such as fiddleneck (Amsinckia) and brodiaeas.
Habitat: Valleys, hillsides, fields, meadows, and other open sunny areas.
Range: Alaska south to central California and northern New Mexico, east to southwest Manitoba.
Conservation: The Island Marble (Euchloe ausonides insulanus) is critically imperiled. It was thought to be extinct but has been rediscovered on San Juan Island (Washington). Conservation efforts focus on restoring its ecosystem - the Puget Sound lowland prairie.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Subspocies insulanus is T1 (Critically Imperiled).
Management Needs: None needed.
Taxonomy Notes:

Images of Euchloe ausonides

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Euchloe ausonides - euchloe-ausonides-kondla2.jpg

Euchloe ausonides - euchloe-ausonides-kondla2.jpg
Euchloe ausonides - euchloe_ausonides_kondla1.jpg

Euchloe ausonides - euchloe_ausonides_kondla1.jpg
Euchloe ausonides - Euchloe_ausonidesSanders.jpg

Euchloe ausonides - Euchloe_ausonidesSanders.jpg
Euchloe ausonides - 52001.jpg

Euchloe ausonides - 52001.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
June 24, 2014 rcav Yellowstone National Park County, Wyoming, United States September 25, 2014 Details
July 11, 1982 legacy.reporter (K Hansen-S. Mattoon) Elko County, Nevada, United States December 01, 2012 Details
June 25, 1984 paulopler (Paul Opler) Lander County, Nevada, United States December 01, 2012 Details
June 03, 1985 legacy.reporter (Floyd & June Preston) Lander County, Nevada, United States December 01, 2012 Details
May 28, 1993 legacy.reporter (George T. Austin) Pershing County, Nevada, United States December 01, 2012 Details
May 27, 2012 Jeanne Dammarell Lincoln County, Washington, United States September 28, 2012 Details
May 19, 2012 plex1ppus Mineral County, Montana, United States June 18, 2012 Details
July 14, 2008 hjbarkey9 Park County, Colorado, United States May 22, 2012 Details
July 10, 2011 Nancy Lea Sandy Natrona County, Wyoming, United States April 18, 2012 Details
June 12, 2008 RaisingButterflies.org (Todd Stout) Douglas County, Nevada, United States January 01, 2012 Details
April 25, 2010 legacy.reporter (Alex Grkovich) Washoe County, Nevada, United States January 01, 2012 Details
April 26, 2010 legacy.reporter (Alex Grkovich) Washoe County, Nevada, United States January 01, 2012 Details
June 15, 2011 Cabngirl Sonoma County, California, United States June 18, 2011 Details
June 04, 2011 plex1ppus Whitman County, Washington, United States June 13, 2011 Details
May 12, 2011 plex1ppus (plex1ppus) Spokane County, Washington, United States May 24, 2011 Details
June 03, 2006 legacy.reporter (David Shaw) Siskiyou County, California, United States May 01, 2011 Details
July 13, 1991 legacy.reporter (Jim Brock) Tuolumne County, California, United States May 01, 2011 Details
May 09, 1981 legacy.reporter (unknown) Sacramento County, California, United States May 01, 2011 Details
April 07, 1983 legacy.reporter (unknown) San Mateo County, California, United States May 01, 2011 Details
June 02, 2009 Norbert Kondla Alberta, Canada February 11, 2011 Details
July 11, 1963 legacy.reporter (Peter Herlan) Elko County, Nevada, United States January 01, 2011 Details
July 14, 2010 legacy.reporter (Paul Opler and EviBuckner-Opler ) Okanogan County, Washington, United States December 31, 2010 Details
July 19, 2010 legacy.reporter (Paul Opler and EviBuckner-Opler ) Teton County, Wyoming, United States December 31, 2010 Details
May 21, 2010 Ken Davenport (Ken Davenport) Tulare County, California, United States December 31, 2010 Details
May 21, 2010 Ken Davenport (Ken Davenport) Tulare County, California, United States December 31, 2010 Details
May 21, 2010 Ken Davenport (Ken Davenport) Tulare County, California, United States December 31, 2010 Details
March 05, 1988 legacy.reporter (R. Langston, D. Parkinson) El Dorado County, California, United States August 02, 2010 Details
June 20, 1988 legacy.reporter (George T. Austin) Humboldt County, California, United States August 02, 2010 Details
March 09, 1983 legacy.reporter (William Swisher) Fresno County, California, United States April 02, 2010 Details
June 19, 1987 legacy.reporter (Laurence Crabtree) Shasta County, California, United States January 25, 2010 Details
May 18, 1979 legacy.reporter (Laurence Crabtree) Butte County, California, United States January 25, 2010 Details
May 10, 1990 legacy.reporter (A. M. Shapiro) Siskiyou County, California, United States January 07, 2010 Details
June 12, 1985 legacy.reporter (A. M. Shapiro) Siskiyou County, California, United States January 07, 2010 Details
July 22, 1990 legacy.reporter (A. M. Shapiro) Siskiyou County, California, United States January 07, 2010 Details
April 07, 1973 legacy.reporter (James R. Mori) Fresno County, California, United States January 06, 2010 Details
March 21, 1974 legacy.reporter (A. M. Shapiro) Sacramento County, California, United States January 06, 2010 Details
June 17, 1967 paulopler (Paul Opler) Lassen County, California, United States January 06, 2010 Details
March 20, 1960 legacy.reporter (Robert L. Langston) Alameda County, California, United States January 05, 2010 Details
February 24, 1951 legacy.reporter (Samuel Smoker) Santa Clara County, California, United States January 05, 2010 Details
March 26, 1983 legacy.reporter (Arthur M. Shapiro) Solano County, California, United States January 05, 2010 Details
March 28, 1983 legacy.reporter (Arthur M. Shapiro) Solano County, California, United States January 05, 2010 Details
April 12, 1914 legacy.reporter (J. A. Comstock) Santa Clara County, California, United States January 04, 2010 Details
April 12, 1914 legacy.reporter (J. A. Comstock) Santa Clara County, California, United States January 04, 2010 Details
April 01, 1919 legacy.reporter (J. A. Comstock) Santa Clara County, California, United States January 04, 2010 Details
May 28, 2007 Ken Davenport (Ken Davenport) Tulare County, California, United States December 08, 2009 Details
May 31, 1999 Ken Davenport (Ken Davenport) Inyo County, California, United States December 08, 2009 Details
July 04, 2003 Ken Davenport (Ken Davenport) Tulare County, California, United States December 08, 2009 Details
June 23, 1986 Ken Davenport (Ken Davenport) Inyo County, California, United States December 08, 2009 Details
July 16, 1933 legacy.reporter (John S. Garth) Mariposa County, California, United States October 20, 2009 Details
July 17, 1933 legacy.reporter (John S. Garth) Mariposa County, California, United States October 20, 2009 Details