Operophtera bruceata

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Operophtera bruceata
Operophtera bruceata adult.jpg
Adult male
Operophtera bruceata adult1.jpg
Adult male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Tribe: Operophterini
Genus: Operophtera
Species: O. bruceata
Binomial name
Operophtera bruceata
(Hulst, 1886)
Synonyms
  • Operophtera groenlandica de Lesse, 1951
  • Operophtera bruceata hyperborea

The Bruce Spanworm (Operophtera bruceata) or (in North America) "Winter Moth" is a species of moth of the family Geometridae. It is found from coast to coast in southern Canada and the northern parts of the United States.

The wingspan of the males is 25–30 mm. Females have underdeveloped wings and do not fly. Adults are on wing from October to December.

The larvae primarily feed on the leaves of Sugar Maple, American Beech and Trembling Aspen. They have also been recorded on willow and various other deciduous trees.

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