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 25 - 48 of 688 verified sightings
Observation date: Mar 14, 2024
Submitted by: madamirie
Region: Monterey County, California, United States
Verified by: Ken Davenport
Verified date: Mar 15, 2024
Observation date: Jul 18, 2023
Submitted by: stevecary
Region: Conejos County, Colorado, United States
Verified by: mikefisher
Verified date: Feb 19, 2024
Observation date: Jul 17, 2023
Submitted by: stevecary
Region: Rio Grande County, Colorado, United States
Verified by: mikefisher
Verified date: Jan 28, 2024
Observation date: Jul 16, 2023
Submitted by: stevecary
Region: Rio Grande County, Colorado, United States
Verified by: mikefisher
Verified date: Jan 28, 2024
Observation date: Jul 14, 2023
Submitted by: stevecary
Region: Conejos County, Colorado, United States
Verified by: mikefisher
Verified date: Dec 09, 2023
Observation date: Jul 22, 2023
Submitted by: ezeemonee
Region: Garfield County, Colorado, United States
Verified by: mikefisher
Verified date: Sep 17, 2023
Observation date: Jul 10, 2023
Submitted by: ncrosbyrd
Region: Summit County, Colorado, United States
Verified by: mikefisher
Verified date: Sep 10, 2023
Observation date: Jul 02, 2020
Submitted by: Robb Hannawacker
Region: San Juan County, Utah, United States
Verified by: James Steen
Verified date: Aug 21, 2023
Observation date: Aug 13, 2023
Submitted by: Marta Reece
Region: Lincoln County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 14, 2023
Observation date: Jul 12, 2023
Submitted by: Joshua C
Region: Bernalillo County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 25, 2023
Observation date: Jul 12, 2022
Submitted by: Eric Hartshaw
Region: Duchesne County, Utah, United States
Verified by: James Steen
Verified date: Jul 12, 2023
Observation date: Jun 26, 2023
Submitted by: JMJaskula
Region: Teton County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jul 10, 2023
Observation date: Jun 22, 2023
Submitted by: weflybye
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 23, 2023
Observation date: May 24, 2023
Submitted by: regina rochefort
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: May 28, 2023
Observation date: May 11, 2023
Submitted by: hiker96
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: May 12, 2023
Observation date: Apr 15, 2023
Submitted by: Marta Reece
Region: Lincoln County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 17, 2023
Observation date: Jul 06, 2021
Submitted by: hydapse
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Mar 23, 2023
Observation date: Jul 02, 2018
Submitted by: jsaunders260
Region: Matanuska-Susitna, Alaska, United States
Verified by: James Steen
Verified date: Feb 11, 2023
Observation date: Jul 04, 2021
Submitted by: frogbandit
Region: Anchorage, Alaska, United States
Verified by: James Steen
Verified date: Feb 11, 2023
Observation date: May 22, 2022
Submitted by: nathandewitt
Region: Matanuska-Susitna, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 11, 2023
Observation date: May 09, 2022
Submitted by: Boba
Region: Juneau, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 11, 2023
Observation date: Jul 11, 2021
Submitted by: frogbandit
Region: Anchorage, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 11, 2023
Observation date: Jun 28, 2020
Submitted by: jpfitzer
Region: Juneau, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 11, 2023
Observation date: Feb 08, 2023
Submitted by: hasfitz5
Region: Contra Costa County, California, United States
Verified by: Ken Davenport
Verified date: Feb 10, 2023
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