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 145 - 168 of 728 verified sightings
Observation date: Jun 30, 2021
Submitted by: Cascade Colors
Region: Clear Creek County, Colorado, United States
Verified by: mikefisher
Verified date: Jul 24, 2021
Observation date: Jun 08, 2021
Submitted by: stevecary
Region: Routt County, Colorado, United States
Verified by: mikefisher
Verified date: Jul 23, 2021
Observation date: Jul 19, 2021
Submitted by: Artemisia
Region: Clallam County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 20, 2021
Observation date: Jul 18, 2021
Submitted by: weflybye
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 19, 2021
Observation date: Jul 09, 2021
Submitted by: hiker96
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 11, 2021
Observation date: Jul 05, 2021
Submitted by: WYbutterflyer1
Region: Laramie County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jul 11, 2021
Observation date: Jun 29, 2021
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jul 01, 2021
Observation date: Jun 23, 2021
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Jun 29, 2021
Observation date: Jun 17, 2021
Submitted by: hiker96
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 17, 2021
Observation date: Jun 05, 2021
Submitted by: jhintermeister
Region: Santa Clara County, California, United States
Verified by: Ken Davenport
Verified date: Jun 07, 2021
Observation date: May 04, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: May 21, 2021
Observation date: May 16, 2021
Submitted by: Hira Walker
Region: Sandoval County, New Mexico, United States
Verified by: stevecary
Verified date: May 21, 2021
Observation date: May 10, 2021
Submitted by: NancyFox
Region: Marin County, California, United States
Verified by: Ken Davenport
Verified date: May 10, 2021
Observation date: May 02, 2021
Submitted by: dlister
Region: Kitsap County, Washington, United States
Verified by: davidwdroppers
Verified date: May 03, 2021
Observation date: Apr 27, 2021
Submitted by: karin_k
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 27, 2021
Observation date: Apr 17, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Apr 25, 2021
Observation date: Jun 12, 2020
Submitted by: WYbutterflyer1
Region: Albany County, Wyoming, United States
Verified by: J_Martineau
Verified date: Feb 01, 2021
Observation date: Jun 16, 2020
Submitted by: stevecary
Region: Conejos County, Colorado, United States
Verified by: mikefisher
Verified date: Nov 23, 2020
Observation date: Jul 07, 2020
Submitted by: stevecary
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Nov 14, 2020
Observation date: Jul 17, 2020
Submitted by: taogirl
Region: Ouray County, Colorado, United States
Verified by: mikefisher
Verified date: Nov 12, 2020
Observation date: May 27, 2020
Submitted by: stevecary
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Nov 03, 2020
Observation date: May 21, 2020
Submitted by: Tim Shortell
Region: Gunnison County, Colorado, United States
Verified by: mikefisher
Verified date: Sep 02, 2020
Observation date: Aug 14, 2020
Submitted by: Cactuswren1976
Region: New Mexico, United States
Verified by: stevecary
Verified date: Aug 31, 2020
Observation date: Jul 31, 2020
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 04, 2020
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