Colias scudderii, the willow sulphur, is a butterfly in the family Pieridae. It is found from Alaska south through the Rocky Mountains to northern New Mexico. The habitat consists of mountain meadows and willow bogs.[2]

Willow sulphur
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Pieridae
Genus: Colias
Species:
C. scudderii
Binomial name
Colias scudderii
Synonyms
  • Colias scudderi
  • Eurymus scudderi
  • Colias flavotincta Cockerell, 1901

The wingspan is 38–51 mm (1.5–2.0 in). Adults are on wing from June to August. They feed on flower nectar.[2]

The larvae feed on the leaves of Salix species (including Salix reticulata, Salix lutea and Salix planifolia). Second, third, and fourth instar larvae hibernate.[2]

Subspecies

edit
  • Colias scudderii scudderii (Colorado, Utah, New Mexico, Wyoming)
  • Colias scudderii ruckesi Klots, 1937 (New Mexico)

References

edit
  1. ^ Colias, Site of Markku Savela
  2. ^ a b c Butterflies and Moths of North America