Diarsia rosaria, the rosy dart, is a moth of the family Noctuidae. It is found from Ontario, Quebec, New Brunswick, Nova Scotia, Newfoundland and Labrador, British Columbia, Alberta, Saskatchewan and Yukon in Canada, south to northern California and eastern Oregon.

Diarsia rosaria
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Noctuidae
Genus: Diarsia
Species:
D. rosaria
Binomial name
Diarsia rosaria
(Grote, 1878)
Synonyms
  • Agrotis rosaria Grote, 1878
  • Diarsia pseudorosaria Hardwick, 1950
  • Diarsia freemani Hardwick, 1950

It is abundant and widely distributed in wet conifer forests.

Its wingspan is about 30 millimeters (1.2 in). Its larvae feed on various grasses.

Subspecies

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  • Diarsia rosaria rosaria (Grote, 1878)
  • Diarsia rosaria freemani Hardwick, 1950
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