Margined White
Pieris marginalis Scudder, 1861
Family: Pieridae
Subfamily: Pierinae
Identification: Summer form is pure white above and below; spring form has black-tipped upper forewing. Underside of hindwing and apex of forewing have veins edged with yellow-green or gray-green.
Wing Span: 1 1/2 - 2 1/4 inches (3.8 - 5.7 cm).
Life History: Males patrol for receptive females. Eggs are laid singly on underside of host plant leaves on which the caterpillars feed. Chrysalis hibernates.
Flight: Two flights from February-September in the West.
Caterpillar Hosts: Various native plants in the mustard (Brassicaceae) family.
Adult Food: Nectar from flowers of the mustard family and other plants.
Habitat: Forests, meadows, deciduous woods, streamsides.
Range: Southern British Columbia and Alberta south to central California and southern New Mexico; east to eastern Wyoming and eastern Colorado.
Conservation: Not usually required.
NCGR:
Management Needs: Study effects of logging and grazing.
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Verified Sightings
Displaying 1 - 24 of 704 verified sightings
Observation date: Jun 18, 2025
Submitted by: gp
Region: Lane County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jun 21, 2025
Observation date: Jun 13, 2025
Submitted by: Cascade Colors
Region: Summit County, Colorado, United States
Verified by: mikefisher
Verified date: Jun 15, 2025
Observation date: Jun 10, 2025
Submitted by: weflybye
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 11, 2025
Observation date: Jun 01, 2025
Submitted by: Reneerob17
Region: Bernalillo County, New Mexico, United States
Verified by: stevecary
Verified date: Jun 02, 2025
Observation date: May 09, 2025
Submitted by: bapeck8
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: May 13, 2025
Observation date: May 09, 2025
Submitted by: karin_k
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: May 11, 2025
Observation date: May 07, 2025
Submitted by: pgericks
Region: Snohomish County, Washington, United States
Verified by: davidwdroppers
Verified date: May 08, 2025
Observation date: May 01, 2025
Submitted by: Paul Prappas
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 01, 2025
Observation date: May 01, 2025
Submitted by: Paul Prappas
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 01, 2025
Observation date: Apr 23, 2025
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Apr 24, 2025
Observation date: Apr 18, 2025
Submitted by: weflybye
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 19, 2025
Observation date: Apr 14, 2025
Submitted by: weflybye
Region: Grays Harbor County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 17, 2025
Observation date: Apr 11, 2025
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 14, 2025
Observation date: Apr 05, 2025
Submitted by: pgericks
Region: Snohomish County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 06, 2025
Observation date: Mar 26, 2025
Submitted by: ezeemonee
Region: Santa Clara County, California, United States
Verified by: Ken Davenport
Verified date: Mar 27, 2025
Observation date: Mar 26, 2025
Submitted by: ezeemonee
Region: Santa Clara County, California, United States
Verified by: Ken Davenport
Verified date: Mar 27, 2025
Observation date: Aug 23, 2024
Submitted by: bonfrey
Region: San Miguel County, New Mexico, United States
Verified by: stevecary
Verified date: Sep 29, 2024
Observation date: May 21, 2022
Submitted by: CheddahCurt
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Sep 18, 2024
Observation date: Aug 29, 2024
Submitted by: weflybye
Region: Clallam County, Washington, United States
Verified by: davidwdroppers
Verified date: Sep 02, 2024
Observation date: Jul 31, 2024
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 27, 2024
Observation date: Jul 31, 2024
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 16, 2024
Observation date: Jul 31, 2024
Submitted by: Robert Gorman
Region: Teton County, Wyoming, United States
Verified by: J_Martineau
Verified date: Aug 11, 2024
Observation date: Jun 30, 2024
Submitted by: weflybye
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 10, 2024
Observation date: Aug 02, 2024
Submitted by: Reneerob17
Region: San Miguel County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 05, 2024
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