National Moth Week is July 18-26!
Moths are amazing creatures. Take photographs and share your moth sightings with us to document the moths where you live.
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 724 verified sightings
Observation date: Jul 14, 2026
Submitted by: ezeemonee
Region: King County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 17, 2026
Observation date: Jul 13, 2026
Submitted by: ezeemonee
Region: King County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 17, 2026
Observation date: Jul 13, 2026
Submitted by: ezeemonee
Region: King County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 17, 2026
Observation date: Jul 13, 2026
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 15, 2026
Observation date: Jul 03, 2026
Submitted by: Cascade Colors
Region: Jackson County, Colorado, United States
Verified by: mikefisher
Verified date: Jul 04, 2026
Observation date: May 30, 2026
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: May 30, 2026
Observation date: May 14, 2026
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: May 16, 2026
Observation date: May 05, 2026
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 06, 2026
Observation date: May 05, 2026
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 06, 2026
Observation date: May 05, 2026
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 06, 2026
Observation date: Apr 24, 2026
Submitted by: topper72
Region: Los Alamos County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 28, 2026
Observation date: Apr 19, 2026
Submitted by: karin_k
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 24, 2026
Observation date: Mar 27, 2026
Submitted by: TPeterson
Region: San Mateo County, California, United States
Verified by: Ken Davenport
Verified date: Mar 28, 2026
Observation date: Jan 24, 2026
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Jan 25, 2026
Observation date: Jul 20, 2025
Submitted by: Ed Rothwell
Region: Shoshone County, Idaho, United States
Verified by: stevekohler
Verified date: Jan 03, 2026
Observation date: Jul 03, 2025
Submitted by: blgreco
Region: Archuleta County, Colorado, United States
Verified by: mikefisher
Verified date: Oct 26, 2025
Observation date: Aug 19, 2024
Submitted by: Hank and Karen
Region: King County, Washington, United States
Verified by: davidwdroppers
Verified date: Sep 21, 2025
Observation date: Jul 03, 2025
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Sep 05, 2025
Observation date: Jul 12, 2025
Submitted by: NikkiM
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Sep 05, 2025
Observation date: Jun 07, 2025
Submitted by: sandyleapt
Region: Benton County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 13, 2025
Observation date: Jun 30, 2025
Submitted by: Funkki
Region: Marion County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 07, 2025
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
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