eurytheme

Alfalfa Butterfly

Colias eurytheme Boisduval, 1852

Family: Pieridae

Status: Abundant resident

NENHP Ranking: Not listed

Range: Inhabits North America south of southern Canada. In Nebraska it can be found statewide.

Broods/Flight Times: Multiple broods from spring thaw to killing frost

Larval Hostplant(s): Many herbaceous legumes, but especially alfalfa (Medicago sativa).

Habitat: Equally at home in urban and rural setting but especially abundant near cultivated alfalfa

Found at:

Overwintering: As pupae

Similar Species: Clouded and Queen Alexandra’s Sulphurs

Notes: Nebraska’s most common butterfly. Males fluoresce under ultraviolet light. Albinic individuals (always females) are common.

Common Name, Location, Photographer
Alfalfa Butterfly – female dorsal
Alfalfa Butterfly – male dorsal
Alfalfa Butterfly – albinic female dorsal

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