Species Detail

Scudder's Sulphur

Colias scudderi Reakirt, 1865

JPG -- species photo

Attributes of Colias scudderi


Family: Whites and Sulphurs (Pieridae)

Subfamily: Sulphurs (Coliadinae)

Identification: Upper surface of male lemon yellow; dark wide border cut by yellow veins. Females often white, with small black cell spot; border incomplete or lacking. Underside of both sexes dirty green.

Life history: Males patrol near willows for receptive females. Females lay eggs singly on young host plant leaves. Caterpillars eat leaves. Second-, third-, and fourth-stage caterpillars hibernate.

Flight: One flight from late June-August.

Wing span: 1 1/2 - 2 inches (3.8 - 5.1 cm).

Caterpillar hosts: Willow shrubs in the willow family (Salicaceae).

Adult food: Flower nectar.

Habitat: Mountain meadows and willow bogs.

Range: Alaska south through Rocky Mountains to northern New Mexico.

Conservation: Not usually required.

NatureServe Global Status: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.

Management needs: Not reported.

Documented Records for Colias scudderi
in Utah



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