Attributes of Euphydryas editha

Edith's Checkerspot
Euphydryas editha (Boisduval, 1852)

Family: Nymphalidae
Subfamily: Nymphalinae
Identification: Variable. Front wing rounded at tip. Upperside is black with red and pale yellow or white bands. Submarginal band of small yellow or white spots; wide postmedian band is red. Underside of hindwing with alternating bands of yellow-orange and cream.
Wing Span: 1 1/4 - 2 inches (3.2 - 5.1 cm).
Life History: Males perch or patrol all day to find females. Eggs are laid in groups on underside of leaves or on flowers of the host plant. Caterpillars eat leaves and flowers; sometimes using different host plants before and after hibernation. Young caterpillars live in loose silk webs; third- and fourth-stage caterpillars hibernate.
Flight: One brood; from March-May at low elevations, June-August at high elevations and in the north.
Caterpillar Hosts: Various species of paintbrush (Castilleja), beardtongues (Penstemon), lousewort (Pedicularis), owl's clover (Orthocarpus), Chinese houses (Collinsia), and plantain (Plantago).
Adult Food: Flower nectar.
Habitat: From sea level to treeline through diverse habitats including coastal chaparral, meadows, fields, foothills, open woods, alpine fellfields.
Range: Southern British Columbia and Alberta south to Baja California, Nevada, Utah, and Colorado.
Conservation: Two subspecies, the Bay Checkerspot (Euphydryas editha bayensis) and the Quino Checkerspot (E. e. quino) are listed as endangered under the Endangered Species Act of 1973.
NCGR: The bay checkerspot (subspecies bayensis) has The Nature Conservancy Global Rank of T1 - 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 other subspecies of Euphydryas editha have The Nature Conservancy Global Rank of G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Protect remaining habitat from development and alteration. Refer to Fish & Wildlife Service recovery plans.
Taxonomy Notes:

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The map below displays all BAMONA data for this species and has three different data layers:
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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 26, 2014 randimal Kittitas County, Washington, United States August 05, 2014 Details
July 14, 2014 JDreimiller Pierce County, Washington, United States August 05, 2014 Details
July 03, 2013 MAKI Washoe County, Nevada, United States October 08, 2013 Details
August 05, 2013 jamesheintz1 Chelan County, Washington, United States September 14, 2013 Details
July 11, 2013 sagebird52 Albany County, Wyoming, United States August 26, 2013 Details
August 05, 2013 jamesheintz1 Chelan County, Washington, United States August 11, 2013 Details
July 29, 2013 jamesheintz1 Skagit County, Washington, United States August 10, 2013 Details
August 03, 2013 PDunwiddie Pierce County, Washington, United States August 05, 2013 Details
July 24, 2013 Bob Mead Pierce County, Washington, United States July 31, 2013 Details
July 28, 2013 randimal Pierce County, Washington, United States July 31, 2013 Details
July 06, 2013 John Barry Skamania County, Washington, United States July 12, 2013 Details
June 18, 2013 ChrisVH Teton County, Wyoming, United States June 24, 2013 Details
May 02, 2013 PDunwiddie Thurston County, Washington, United States May 04, 2013 Details
June 30, 2009 tjantscher Albany County, Wyoming, United States January 10, 2013 Details
August 03, 2012 swittwa Pierce County, Washington, United States December 17, 2012 Details
May 08, 1984 legacy.reporter (George T. Austin) Lyon County, Nevada, United States December 01, 2012 Details
June 29, 1987 legacy.reporter (George T. Austin) Humboldt County, Nevada, United States December 01, 2012 Details
August 01, 1987 legacy.reporter (Wayne Dawes) Esmeralda 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
June 17, 1990 legacy.reporter (George T. Austin) Lincoln County, Nevada, United States December 01, 2012 Details
August 12, 2012 plex1ppus Okanogan County, Washington, United States September 22, 2012 Details
September 02, 2012 PDunwiddie Pierce County, Washington, United States September 03, 2012 Details
July 04, 2012 eal79 Tulare County, California, United States July 17, 2012 Details
July 05, 2012 eal79 Tulare County, California, United States July 17, 2012 Details
July 01, 2012 eal79 Fresno County, California, United States July 16, 2012 Details
July 01, 2012 eal79 Fresno County, California, United States July 16, 2012 Details
July 02, 2012 eal79 Fresno County, California, United States July 16, 2012 Details
July 02, 2012 eal79 Tulare County, California, United States July 16, 2012 Details
July 03, 2012 eal79 Tulare County, California, United States July 16, 2012 Details
August 21, 2011 PDunwiddie Pierce County, Washington, United States May 21, 2012 Details
May 12, 2012 PDunwiddie Thurston County, Washington, United States May 14, 2012 Details
August 30, 2011 lhrobinson9672 Teton County, Wyoming, United States March 08, 2012 Details
August 19, 2011 Tom Jenkins Linn County, Oregon, United States January 23, 2012 Details
July 28, 2011 Christopher Christie Washington County, Idaho, United States January 09, 2012 Details
July 28, 2011 Christopher Christie Washington County, Idaho, United States January 09, 2012 Details
May 22, 2012 Ken Davenport (Ken Davenport) Tulare County, California, United States January 01, 2012 Details
May 22, 2012 Ken Davenport (Ken Davenport) Tulare County, California, 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
March 23, 2011 Doug Taron Riverside County, California, United States November 06, 2011 Details
July 10, 2011 lhrobinson9672 Jefferson County, Washington, United States November 01, 2011 Details
July 27, 2011 Christopher Viney Mono County, California, United States July 31, 2011 Details
April 12, 1983 legacy.reporter (Jim Brock) San Mateo County, California, United States May 01, 2011 Details
June 12, 1977 legacy.reporter (Jim Brock) San Bernardino County, California, United States May 01, 2011 Details
April 03, 1966 legacy.reporter (unknown) San Mateo County, California, United States May 01, 2011 Details
June 14, 1985 legacy.reporter (unknown) San Bernardino County, California, United States May 01, 2011 Details
March 20, 1945 legacy.reporter (unknown) Riverside County, California, United States May 01, 2011 Details
March 26, 1927 legacy.reporter (unknown) San Diego County, California, United States May 01, 2011 Details
April 30, 1978 legacy.reporter (unknown) California, United States May 01, 2011 Details
June 19, 2000 legacy.reporter (unknown) Mendocino County, California, United States May 01, 2011 Details