Acadian Hairstreak, Satyrium acadica

Acadian Hairstreak

Satyrium acadica

The Acadian Hairstreak is slightly larger than Edward’s and Banded Hairstreaks. It is light gray underneath, with with a conspicuous submarginal row of orange on the hindwing below that continues over the blue tail spot. A postmedian row of round black spots is very conspicuous on the light background of both wings. The hind wings have obvious tails.

Wetland areas, especially marshes, with an abundance of willow, the host plant of this species.

Overwintering Strategy:   Eggs

One brood. It can be found from Late June through July.

The Acadian Hairstreak often perches on the tops of vegetation, usually near a good patch of willows, its host plant. This makes fresh, light gray Acadian Hairstreaks often easy to spot.

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
 Southern Wisconsin Butterfly Assn (NABA)
 The Butterfly Site

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