Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Happy Pollinator Week: June 21-27, 2021! Butterflies and moths are pollinators of many flowering plants.

Did you know? The Hummingbird Clearwing (Hemaris thysbe) hovers in flight and uses its long tongue to sip nectar from flowers.

Mustard White
Pieris oleracea Harris, 1829


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 during the day for receptive females. Eggs are laid singly on underside of host plant leaves. Caterpillars feed on leaves. Chrysalis hibernates.
Flight: Two flights from April-September in mid-continent; one flight from June-July in the north.
Caterpillar Hosts: Various plants in the mustard (Brassicaceae) family.
Adult Food: Flower nectar from mustard family and other plants.
Habitat: Open forests and fields, deciduous woods, bogs, streamsides.
Range: East from the Dakotas and Canadian prairie provinces across the Great Lakes area to New England and Nova Scotia.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery
Management Needs: None noted.
Comments: NULL