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Oligocentria semirufescens, the red-washed prominent moth or rusty prominent, is a moth of the family Notodontidae. The species was first described by Francis Walker in 1865. It is found in North America from Nova Scotia west to Vancouver Island, south to Florida, Colorado and central California.

Oligocentria semirufescens
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Notodontidae
Genus:	Oligocentria
Species:	O. semirufescens
Binomial name
Oligocentria semirufescens (Walker, 1865)
Synonyms
Hatima semirufescens Walker, 1865 Oligocentria eximia (Grote, 1881)

Western populations of O. semirufescens are paler and greyer than those from eastern Canada, and superficially resemble the southern Oligocentria perangulata.

The wingspan is 30–45 mm. Adults are on wing from May to September, but from June through early August in Alberta.

The larvae feed on various trees and shrubs, including apple, beech, birch, poplar, oak, maple, rose and willow.

External links

• Robinson, E. & Anweiler, G. G. "Species Details Oligocentria semirufescens". University of Alberta Museums. E.H. Strickland Entomological Museum. Retrieved November 13, 2020.
• "930105.00 – 8012 – Oligocentria semirufescens – Red-washed Prominent – (Walker, 1865)". North American Moth Photographers Group. Mississippi State University. Retrieved November 13, 2020.
• Cotinis (September 19, 2006). "Species Oligocentria semirufescens - Red-washed Prominent - Hodges#8012". BugGuide. Retrieved November 13, 2020.

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