Checkered White, Pontia protodice

Checkered White

Pontia protodice

Description:
White butterfly with extensive black or brown markings. The female has much more extensive markings. Like the Mustard White, this species has a spring form that has dark, greenish veins beneath.

Habitat:
Open fields and disturbed areas where plants in the mustard family, the larval host plants of this species, occur.

Overwintering Strategy:   Chrysalis

Flight:   
They may have three or more generations in the south, and they could be present in Wisconsin from May through October.

Notes:   
The presence and abundance of the Checkered White varies greatly from year to year. Perhaps this species may be able to occasionally survive the Wisconsin winters, but also become replenished from farther south on a regular basis.

Overwintering Strategy

Two-way migration: Adult migrates from Wisconsin to Central Mexico
Small migration: Adult migrates from Wisconsin to southern US
Immigrant: Adult migrates into Wisconsin from warmer areas and don't fly south in winter
Adult Butterfly: Hibernates overwinter as an adult butterfly
Eggs: Eggs laid on stems, twigs or foot plants overwinter in diapause
Caterpillar: Caterpillars make nests on the base of plants and hibernate until spring
Chrysalis: Caterpillars shed their last skin, form a chrysalis and enter diapause.

For more information, read: Where Do Butterflies Go In Winter?

Further Information:   

 Design A Butterfly Garden
 Take The Butterfly Quiz
 Monarch Life Cycle
 Butterflies and Moths of North America
 WisconsinButterflies.org
 Southern Wisconsin Butterfly Assn (NABA)
 The Butterfly Site

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