Attributes of Euphydryas phaeton

Baltimore Checkerspot
Euphydryas phaeton (Drury, 1773)

Family: Nymphalidae
Subfamily: Nymphalinae
Identification: Geographically variable. Upperside is black with red-orange crescents on outer margins of both wings and rows of creamy white spots inward.
Wing Span: 1 3/4 - 2 3/4 inches (4.5 - 7 cm).
Life History: Males perch near the ground to find females. Eggs are laid in groups of 100-700 under host plant leaves. Newly-hatched caterpillars move to the tip of the plant and feed together in a web which is enlarged downward as the caterpillars consume more of the plant. These caterpillars suffer high mortality from falling off the plant and from parasitism by wasps. Fourth-stage caterpillars hibernate in rolled leaves on the ground.
Flight: One brood; from May-June in the south, June-August in the north.
Caterpillar Hosts: Plants where eggs are laid and that caterpillars eat before hibernating are turtlehead (Chelone glabra), hairy beardtongue (Penstemon hirsutus), English plantain (Plantago lanceolata), and false foxglove (Aureolaria). After overwintering, caterpillars may continue to use these plants, but may also wander and feed on unrelated plants including arrowwood (Viburnum recognitum), common lousewort (Pedicularis canadensis), Japanese honeysuckle (Lonicera japonica), and white ash (Fraxinus americana).
Adult Food: Nectar from flowers of milkweed, viburnum, and wild rose.
Habitat: Wet meadows, bogs, and marshes in the northeast part of the range; dry open or wooded hillsides in the southwest.
Range: Very local. Nova Scotia west across the Great Lakes region to southeast Manitoba; south through the eastern United States to northern Georgia, northern Mississippi, and northeast Oklahoma. Isolated records in northeast Texas and Nebraska.
Conservation: Some regional populations may be declining.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:

Images of Euphydryas phaeton

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Euphydryas phaeton - Baltimore-Simons.jpg

Euphydryas phaeton - Baltimore-Simons.jpg
Euphydryas phaeton - und-BaltimoreCheckerspot-Simons.jpg

Euphydryas phaeton - und-BaltimoreCheckerspot-Simons.jpg

Euphydryas phaeton - Euphydryas_phaetonOpler.jpg

Euphydryas phaeton - Euphydryas_phaetonOpler.jpg
Euphydryas phaeton - Euphydryas_phaeton2Opler.jpg

Euphydryas phaeton - Euphydryas_phaeton2Opler.jpg

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 29, 2014 BMcNaught Susquehanna County, Pennsylvania, United States August 26, 2015 Details
July 21, 2015 JRonan17 Herkimer County, New York, United States July 26, 2015 Details
July 09, 2015 jvkopple2 Kalkaska County, Michigan, United States July 24, 2015 Details
July 20, 2015 JRonan17 Herkimer County, New York, United States July 21, 2015 Details
June 19, 2015 John429 Washtenaw County, Michigan, United States July 18, 2015 Details
July 10, 2015 John429 Washtenaw County, Michigan, United States July 18, 2015 Details
June 20, 2014 Tindomul1of9 Suffolk County, New York, United States July 15, 2015 Details
July 15, 2015 ezeemonee Erie County, New York, United States July 15, 2015 Details
July 03, 2015 Sheryl Johnson Barnstable County, Massachusetts, United States July 13, 2015 Details
June 30, 2015 johnrwhitney Erie County, New York, United States July 05, 2015 Details
June 25, 2015 sh11 Ontario, Canada June 29, 2015 Details
June 23, 2015 tmlehman Steuben County, Indiana, United States June 26, 2015 Details
June 20, 2015 BeaLaporte Ontario, Canada June 20, 2015 Details
June 18, 2015 gdabowman Livingston County, Michigan, United States June 19, 2015 Details
May 23, 2015 Brett Budach Iron County, Missouri, United States June 15, 2015 Details
June 13, 2015 Brett Budach Dent County, Missouri, United States June 15, 2015 Details
June 09, 2015 cblazo Franklin County, Pennsylvania, United States June 10, 2015 Details
May 28, 2015 vpalen Wood County, Wisconsin, United States June 05, 2015 Details
May 31, 2015 routledge_SaultCollege Ontario, Canada June 03, 2015 Details
June 01, 2015 Austin88164 Somerset County, Pennsylvania, United States June 02, 2015 Details
May 10, 2015 Doug Bruce Anderson County, Tennessee, United States May 16, 2015 Details
July 05, 2014 ellenjones6 Franklin County, New York, United States March 23, 2015 Details
July 17, 2014 dpgbfly1 Mille Lacs County, Minnesota, United States February 10, 2015 Details
July 15, 2014 lmcrotty Morrison County, Minnesota, United States December 29, 2014 Details
July 11, 2014 sharin Clarion County, Pennsylvania, United States July 13, 2014 Details
June 27, 2014 Chet Gottfried Centre County, Pennsylvania, United States July 10, 2014 Details
July 06, 2014 christineanngreen Cumberland County, Maine, United States July 09, 2014 Details
June 29, 2014 stormyeyes99 Sussex County, New Jersey, United States July 04, 2014 Details
June 23, 2014 bvanderweide Oakland County, Michigan, United States July 01, 2014 Details
June 23, 2014 a-o Tompkins County, New York, United States June 28, 2014 Details
June 20, 2014 farmgirldoreen Broome County, New York, United States June 21, 2014 Details
June 05, 2014 a-o Tompkins County, New York, United States June 06, 2014 Details
July 24, 2013 ellenjones6 Franklin County, New York, United States March 20, 2014 Details
July 02, 2012 ScottAYoung Strafford County, New Hampshire, United States January 29, 2014 Details
June 27, 2010 cgreiner Fillmore County, Minnesota, United States September 18, 2013 Details
June 10, 2010 Joe Sebastiani New Castle County, Delaware, United States September 05, 2013 Details
July 20, 2013 martytdx Centre County, Pennsylvania, United States August 12, 2013 Details
July 09, 2013 Dave Kinney Wexford County, Michigan, United States July 30, 2013 Details
July 20, 2013 dendroica5 Steuben County, New York, United States July 22, 2013 Details
July 12, 2013 CURLY Blair County, Pennsylvania, United States July 15, 2013 Details
July 13, 2013 Headmj Cattaraugus County, New York, United States July 13, 2013 Details
June 29, 2013 cyric Kent County, Rhode Island, United States July 12, 2013 Details
June 15, 2013 LinRandolph Geauga County, Ohio, United States July 08, 2013 Details
June 06, 2013 rowax Bristol County, Massachusetts, United States July 06, 2013 Details
June 06, 2013 rowax Bristol County, Massachusetts, United States July 06, 2013 Details
June 06, 2013 rowax Bristol County, Massachusetts, United States July 06, 2013 Details
June 06, 2013 rowax Bristol County, Massachusetts, United States July 06, 2013 Details
June 15, 2013 davmcnaugh Forest County, Pennsylvania, United States July 02, 2013 Details
June 10, 2013 doris potter Quebec, Canada June 17, 2013 Details
May 25, 2013 dspicer Cumberland County, Tennessee, United States May 26, 2013 Details