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.
Comments: NULL
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Verified Sightings
Displaying 97 - 120 of 527 verified sightings
Observation date: Jul 15, 2012
Submitted by: Ann and Rob Simpson
Region: Yellowstone National Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 15, 2014
Observation date: Jun 24, 2014
Submitted by: rcav
Region: Yellowstone National Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Sep 25, 2014
Observation date: Jul 11, 1982
Submitted by: legacy.reporter (K Hansen-S. Mattoon)
Region: Elko County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: May 28, 1993
Submitted by: legacy.reporter (George T. Austin)
Region: Pershing County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: Jun 25, 1984
Submitted by: paulopler (Paul Opler)
Region: Lander County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: Jun 03, 1985
Submitted by: legacy.reporter (Floyd & June Preston)
Region: Lander County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: May 27, 2012
Submitted by: Jdammarell
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Sep 28, 2012
Observation date: May 19, 2012
Submitted by: plex1ppus
Region: Mineral County, Montana, United States
Verified by: stevekohler
Verified date: Jun 18, 2012
Observation date: Jul 14, 2008
Submitted by: hjbarkey9
Region: Park County, Colorado, United States
Verified by: mikefisher
Verified date: May 22, 2012
Observation date: Jul 10, 2011
Submitted by: Nancy Lea Sandy
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: Apr 18, 2012
Observation date: Apr 26, 2010
Submitted by: legacy.reporter (Alex Grkovich)
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: Jun 12, 2008
Submitted by: RaisingButterfl... (Todd Stout)
Region: Douglas County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: Apr 25, 2010
Submitted by: legacy.reporter (Alex Grkovich)
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: unknown
Submitted by: RaisingButterfl... (Todd Stout)
Region: United States
Verified by: BAMONA
Verified date: Sep 06, 2011
Observation date: unknown
Submitted by: RaisingButterfl... (Todd Stout)
Region: United States
Verified by: BAMONA
Verified date: Sep 06, 2011
Observation date: Jun 15, 2011
Submitted by: cabngirl
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Jun 18, 2011
Observation date: Jun 04, 2011
Submitted by: plex1ppus
Region: Whitman County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 13, 2011
Observation date: May 12, 2011
Submitted by: plex1ppus (plex1ppus)
Region: Spokane County, Washington, United States
Verified by: davidwdroppers
Verified date: May 24, 2011
Observation date: Apr 07, 1983
Submitted by: legacy.reporter (unknown)
Region: San Mateo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jul 13, 1991
Submitted by: legacy.reporter (Jim Brock)
Region: Tuolumne County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: May 09, 1981
Submitted by: legacy.reporter (unknown)
Region: Sacramento County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jun 03, 2006
Submitted by: legacy.reporter (David Shaw)
Region: Siskiyou County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jun 02, 2009
Submitted by: Norbert Kondla
Region: Alberta, Canada
Verified by: Norbert Kondla
Verified date: Feb 11, 2011
Observation date: Jul 11, 1963
Submitted by: legacy.reporter (Peter Herlan)
Region: Elko County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2011
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